FREESTYLE BLOOD GLUCOSE TEST STRIPS, MODELS 100-COUNT: 12401-01, 12101-21, 12101-22, 12101-23
Device Facts
| Record ID | K092638 |
|---|---|
| Device Name | FREESTYLE BLOOD GLUCOSE TEST STRIPS, MODELS 100-COUNT: 12401-01, 12101-21, 12101-22, 12101-23 |
| Applicant | Abbott Diabetes Care, Inc. |
| Product Code | NBW · Clinical Chemistry |
| Decision Date | Jun 15, 2010 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 862.1345 |
| Device Class | Class 2 |
| Attributes | Pediatric |
Indications for Use
The FreeStyle Blood Glucose Monitoring System is intended for use in the quantitative measurement of glucose in capillary whole blood from the finger, upper arm and palm. It is intended for use by healthcare professionals and people with diabetes mellitus at home as an aid in monitoring the effectiveness of a diabetes control program. It is not intended for the diagnosis of or screening for diabetes mellitus, and it is not intended for use on neonates or arterial blood.
Device Story
System comprises blood glucose meter, test strips, and control solutions. Input: 0.3 μL capillary or venous whole blood sample applied to test strip. Principle: Coulometric biosensor technology using FAD-dependent glucose dehydrogenase (GDH-FAD) enzyme; electrons from glucose reaction transferred via mediator to meter; electrical current measured over time proportional to glucose concentration. Output: Quantitative blood glucose level (20-500 mg/dL) displayed on meter. Used by healthcare professionals and patients at home. Output used to monitor diabetes control program effectiveness. Benefits: Rapid, quantitative glucose monitoring for diabetes management.
Clinical Evidence
No clinical data provided. Substantial equivalence supported by bench testing of the modified test strip chemistry, including performance comparisons against predicate systems and verification of compatibility with existing meter algorithms.
Technological Characteristics
Electrochemical coulometric biosensor. Materials: Melinex, silver/silver chloride ink, DuPont carbon ink, polymer resin adhesive. Enzyme: GDH-FAD. Mediator: MAP (n-methyl pyridine). Sample volume: 0.3 microliters. Connectivity: Standalone test strip for handheld meter. Sterilization: Not specified.
Indications for Use
Indicated for quantitative glucose measurement in capillary whole blood (finger, upper arm, palm) for patients with diabetes mellitus. Intended for use by healthcare professionals and patients at home to monitor diabetes treatment effectiveness. Contraindicated for neonates, arterial blood, and diagnosis or screening of diabetes.
Regulatory Classification
Identification
A glucose test system is a device intended to measure glucose quantitatively in blood and other body fluids. Glucose measurements are used in the diagnosis and treatment of carbohydrate metabolism disorders including diabetes mellitus, neonatal hypoglycemia, and idiopathic hypoglycemia, and of pancreatic islet cell carcinoma.
Special Controls
*Classification.* Class II (special controls). The device, when it is solely intended for use as a drink to test glucose tolerance, is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 862.9.
Predicate Devices
- FreeStyle Blood Glucose Monitoring System (k031260)
- FreeStyle Freedom Blood Glucose Monitoring System (k051839)
Related Devices
- K092602 — FREESTYLE Lite Blood Glucose Monitoring System and Freestyle Freedom Lite Blood Glucose Monitoring System · Abbott Diabetes Care, Inc. · May 14, 2010
- K113614 — ACCU-CHECK COMPACT PLUS BLOOD GLUCOSE MONITORING SYSTEM · Roche Diagnostics · Feb 12, 2013
- K070984 — THE PRECISION / OPTIUM POINT OF CARE BLOOD GLUCOSE TEST STRIPS · Abbott Diabetes Care, Inc. · Nov 1, 2007
Submission Summary (Full Text)
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# 510(k) SUBSTANTIAL EQUIVALENCE DETERMINATION DECISION SUMMARY ASSAY AND INSTRUMENT COMBINATION TEMPLATE
A. 510(k) Number:
k092638
B. Purpose for Submission:
New Device – New glucose test strips with GDH-FAD methodology for cleared meters
C. Measurand:
Whole blood glucose
D. Type of Test:
Quantitative coulometric assay, glucose dehydrogenase (GDH-FAD)
E. Applicant:
Abbott Diabetes Care, Inc.
F. Proprietary and Established Names:
FreeStyle 3 Blood Glucose Monitoring System
FreeStyle 5 Blood Glucose Monitoring System
FreeStyle Freedom Blood Glucose Monitoring System
FreeStyle Flash Blood Glucose Monitoring System
G. Regulatory Information:
1. Regulation section:
21 CFR 862.1345; Glucose test system
2. Classification:
Class II
3. Product code:
NBW, System, Test, Blood Glucose, Over The Counter
LFR, Glucose Dehydrogenase, Glucose
4. Panel:
Clinical Chemistry (75)
H. Intended Use:
1. Intended use(s):
See Indications for Use below.
2. Indications(s) for use:
FreeStyle 3 Blood Glucose Monitoring System
The FreeStyle 3 Blood Glucose Monitoring System is intended for use in the quantitative measurement of glucose in capillary whole blood from the finger, upper
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arm and palm. It is intended for use by healthcare professionals and people with diabetes mellitus at home as an aid in monitoring the effectiveness of a diabetes control program. It is not intended for the diagnosis of or screening for diabetes mellitus, and is not intended for use on neonates or arterial blood.
## FreeStyle 5 Blood Glucose Monitoring System
The FreeStyle 5 Blood Glucose Monitoring System is intended for use in the quantitative measurement of glucose in capillary whole blood from the finger, upper arm and palm, and venous whole blood. It is intended for use by healthcare professionals and people with diabetes mellitus at home as an aid in monitoring the effectiveness of a diabetes control program. It is not intended for the diagnosis of or screening for diabetes mellitus, and is not intended for use on neonates or arterial blood.
## FreeStyle Freedom Blood Glucose Monitoring System
The FreeStyle Freedom Blood Glucose Monitoring System is intended for use in the quantitative measurement of glucose in capillary whole blood from the finger, upper arm and palm, and venous whole blood. It is intended for use by healthcare professionals and people with diabetes mellitus at home as an aid in monitoring the effectiveness of a diabetes control program. It is not intended for the diagnosis of or screening for diabetes mellitus, and is not intended for use on neonates or arterial blood.
## FreeStyle Flash Blood Glucose Monitoring System
The FreeStyle Flash Blood Glucose Monitoring System is intended for use in the quantitative measurement of glucose in capillary whole blood from the finger, upper arm and palm, and venous whole blood. It is intended for use by healthcare professionals and people with diabetes mellitus at home as an aid in monitoring the effectiveness of a diabetes control program. It is not intended for the diagnosis of or screening for diabetes mellitus, and is not intended for use on neonates or arterial blood.
3. Special conditions for use statement(s):
- Not intended for use on neonates
- Not for the diagnosis of or screening for diabetes mellitus
- Not to be used for patients who are dehydrated, hypotensive or in shock
- Not for use for patients in a hyperglycemic-hyperosmolar state, with or without ketosis.
- Not for use on critically ill patients
- Alternative site testing can only be done during times of steady state
4. Special instrument requirements:
FreeStyle 3, 5, Freedom and Flash Blood Glucose meters
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I. Device Description:
The FreeStyle 3, 5, Freedom and Flash Blood Glucose Monitoring Systems contain a blood glucose meter (3, 5, Freedom and Flash, respectively), FreeStyle test strips, and FreeStyle control solutions.
J. Substantial Equivalence Information:
1. Predicate device name(s):
FreeStyle Blood Glucose Monitoring System (for FreeStyle 3, 5, and Flash)
FreeStyle Freedom Blood Glucose Monitoring System (for FreeStyle Freedom)
2. Predicate 510(k) number(s):
k031260 (FreeStyle BGMS)
k051839 (FreeStyle Freedom BGMS)
3. Comparison with predicate:
| Similarities | | |
| --- | --- | --- |
| Item | All Subject Devices | Predicates |
| Indications for use | The FreeStyle Lite and FreeStyle Freedom Lite Blood Glucose Monitoring Systems are specifically indicated for use on The FreeStyle Lite and FreeStyle Freedom Lite Blood Glucose Monitoring Systems are intended for use in the quantitative measurement of glucose in capillary whole blood from the finger, forearm and palm, and venous whole blood. They are intended for use by healthcare professionals and people with diabetes mellitus at home as an aid in monitoring the effectiveness of a diabetes control program. They are not intended for the diagnosis of or screening for diabetes mellitus, and are not intended for use on neonates or arterial blood. | Same |
| Test Principle | Coulometric biosensor technology | Same |
| Sample Type | capillary whole blood | Same |
| Sample volume | 0.3 μL | Same |
| Measurement range | 20-500 mg/dL | Same |
| Coding | required | Same |
| Differences | | | |
| --- | --- | --- | --- |
| Item | Subject Devices | | Predicates |
| Enzyme | GDH-FAD | | GDH-PQQ |
| Test time | FreeStyle 3 BGMS | 14 seconds | FreeStyle BGMS 15 seconds |
| | FreeStyle 5 BGMS | 7 seconds | |
| | FreeStyle Flash BGMS | 7 seconds | FreeStyle Freedom BGMS 5 seconds |
| | FreeStyle Freedom BGMS | 4 seconds | |
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K. Standard/Guidance Document Referenced (if applicable):
- ISO 15197:2003- In vitro diagnostic test systems – Requirements for blood-glucose monitoring systems for self-testing in managing diabetes mellitus.
- ISO 14971:2007, Medical devices – Application of risk management to medical devices.
- EN 13640:2002, Stability testing of in vitro diagnostic medical devices.
- CLSI EP5-A2: Evaluation of Precision Performance of Quantitative Measurement Methods.
- CLSI EP6-A: Evaluation of Linearity of Quantitative Measurement Procedures, A Statistical Approach.
- CLSI EP7-A2: Interference Testing in Clinical Chemistry.
- CLSI EP9-A2: Method Comparison and Bias Estimation Using Patient Samples.
- FDA Guideline, Review criteria for assessment of portable blood glucose monitoring in vitro diagnostic devices using glucose oxidase, dehydrogenase or hexokinase methodology.
L. Test Principle:
The FreeStyle 3, 5, Freedom, and Flash glucose meters, in conjunction with the Freestyle test strips, utilize coulometric biosensor technology to quantitatively measure the glucose concentration in whole blood samples and in control solutions. The glucose biosensors recognize the glucose present in whole blood or control solutions by virtue of the specificity of the enzyme FAD dependent glucose dehydrogenase (GDH) present on the test strip. The electrons liberated by this reaction are transferred via a co-factor and mediator to the meter where they are read as a small electrical current. The magnitude of the charge measured over reaction time is directly proportional to the level of glucose in the applied sample.
M. Performance Characteristics (if/when applicable):
1. Analytical performance:
a. Precision/Reproducibility:
The sponsor performed precision studies in accordance with the ISO 15197 guideline. Venous whole blood was adjusted to 5 glucose levels (hematocrit range 43 to 46%) were used for within-day precision studies. Each concentration was tested 10 times each on 10 meters, using 3 test strip lots, for a total of 300 tests per blood glucose level. The reference value was determined by the YSI 2300 glucose analyzer. Results are summarized below:
FreeStyle 3
| | Level 1
(YSI = 40.1 mg/dL) | | | Level 2
(YSI = 85.9 mg/dL) | | | Level 3
(YSI = 126.5 mg/dL) | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV | Average | SD | %CV |
| 1 | 39.3 | 0.9 | 2.4 | 88.2 | 1.6 | 1.8 | 124.6 | 3.2 | 2.6 |
| 2 | 38.1 | 0.9 | 2.3 | 86.5 | 2.3 | 2.7 | 124.0 | 5.0 | 4.0 |
| 3 | 36.6 | 1.3 | 3.6 | 84.9 | 1.9 | 2.2 | 121.9 | 2.4 | 2.0 |
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5
| | Level 4
(YSI = 210.1 mg/dL) | | | Level 5
(YSI = 307.4 mg/dL) | | |
| --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV |
| 1 | 208.3 | 3.0 | 1.5 | 295.8 | 5.0 | 1.7 |
| 2 | 205.9 | 8.8 | 4.3 | 295.5 | 12.9 | 4.4 |
| 3 | 203.4 | 3.3 | 1.6 | 293.5 | 5.8 | 2.0 |
## FreeStyle 5
| | Level 1
(YSI = 40.1 mg/dL) | | | Level 2
(YSI = 85.9 mg/dL) | | | Level 3
(YSI = 126.5 mg/dL) | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV | Average | SD | %CV |
| 1 | 37.8 | 1.1 | 3.0 | 90.7 | 2.2 | 2.4 | 129.8 | 3.4 | 2.6 |
| 2 | 31.9 | 1.1 | 3.3 | 88.7 | 2.2 | 2.4 | 126.3 | 6.2 | 4.9 |
| 3 | 39.2 | 1.5 | 3.9 | 95.1 | 1.5 | 1.6 | 133.3 | 2.3 | 1.7 |
| | Level 4
(YSI = 210.1 mg/dL) | | | Level 5
(YSI = 307.4 mg/dL) | | |
| --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV |
| 1 | 220.2 | 8.2 | 3.7 | 345.7 | 8.3 | 2.4 |
| 2 | 218.0 | 4.2 | 1.9 | 344.6 | 5.4 | 1.6 |
| 3 | 222.7 | 5.3 | 2.4 | 357.3 | 8.5 | 2.4 |
## FreeStyle Freedom
| | Level 1
(YSI = 42.8 mg/dL) | | | Level 2
(YSI = 93.5 mg/dL) | | | Level 3
(YSI = 138.9 mg/dL) | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV | Average | SD | %CV |
| 1 | 42.5 | 1.4 | 3.2 | 90.6 | 2.1 | 2.3 | 134.5 | 3.4 | 2.5 |
| 2 | 38.4 | 1.3 | 3.5 | 90.0 | 1.8 | 2.0 | 134.5 | 3.4 | 2.5 |
| 3 | 41.6 | 1.6 | 3.9 | 91.1 | 2.0 | 2.2 | 135.1 | 3.1 | 2.3 |
| | Level 4
(YSI = 224.3 mg/dL) | | | Level 5
(YSI = 334.6 mg/dL) | | |
| --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV |
| 1 | 213.5 | 5.0 | 2.4 | 328.0 | 9.6 | 2.9 |
| 2 | 222.0 | 4.2 | 1.9 | 338.7 | 6.6 | 1.9 |
| 3 | 222.3 | 3.5 | 1.6 | 339.4 | 6.8 | 2.0 |
## FreeStyle Flash
| | Level 1
(YSI = 35.0 mg/dL) | | | Level 2
(YSI = 87.8 mg/dL) | | | Level 3
(YSI = 129.7 mg/dL) | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV | Average | SD | %CV |
| 1 | 36.9 | 1.2 | 3.1 | 83.3 | 2.2 | 2.7 | 126.5 | 2.6 | 2.1 |
| 2 | 33.4 | 1.2 | 3.7 | 82.1 | 2.2 | 2.6 | 127.0 | 3.3 | 2.6 |
| 3 | 34.7 | 1.7 | 4.8 | 82.0 | 2.0 | 2.4 | 128.5 | 2.1 | 1.6 |
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The sponsor also evaluated the day-to-day precision of the device using replicate measurements of glucose control solutions (low, normal, and high). Three different concentrations, using the same lot of control solutions, were tested on 10 meters, each tested in duplicate over 20 days with 3 strip lots. Results are summarized below:
FreeStyle 3
| | Level 1
40-70 mg/dL | | | Level 2
83-125 mg/dL | | | Level 3
248-372 mg/dL | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV | Average | SD | %CV |
| 1 | 48.1 | 1.8 | 3.8 | 91.8 | 2.9 | 3.1 | 281.6 | 6.7 | 2.4 |
| 2 | 48.5 | 1.5 | 3.2 | 90.7 | 3.3 | 3.7 | 281.8 | 7.7 | 2.7 |
| 3 | 48.9 | 1.3 | 2.6 | 92.0 | 2.3 | 2.5 | 281.0 | 5.6 | 2.0 |
FreeStyle 5
| | Level 1
40-70 mg/dL | | | Level 2
83-125 mg/dL | | | Level 3
248-372 mg/dL | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV | Average | SD | %CV |
| 1 | 46.0 | 1.9 | 4.2 | 87.1 | 2.8 | 3.3 | 295.1 | 11.0 | 3.7 |
| 2 | 45.1 | 2.5 | 5.7 | 89.1 | 2.7 | 3.0 | 303.2 | 7.0 | 2.3 |
| 3 | 48.6 | 1.6 | 3.3 | 91.5 | 2.5 | 2.7 | 301.5 | 8.1 | 2.7 |
FreeStyle Freedom
| | Level 1
40-70 mg/dL | | | Level 2
83-125 mg/dL | | | Level 3
248-372 mg/dL | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV | Average | SD | %CV |
| 1 | 51.9 | 1.4 | 2.7 | 98.4 | 2.7 | 2.7 | 303.3 | 4.5 | 1.5 |
| 2 | 50.2 | 1.7 | 3.4 | 98.2 | 2.9 | 2.9 | 305.7 | 6.5 | 2.1 |
| 3 | 55.2 | 2.1 | 3.8 | 102.6 | 2.6 | 2.6 | 310.9 | 5.3 | 1.7 |
FreeStyle Flash
| | Level 1
40-70 mg/dL | | | Level 2
83-125 mg/dL | | | Level 3
248-372 mg/dL | | |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Lot | Average | SD | %CV | Average | SD | %CV | Average | SD | %CV |
| 1 | 45.0 | 1.3 | 2.9 | 86.6 | 3.9 | 4.5 | 290.1 | 9.6 | 3.3 |
| 2 | 44.1 | 3.7 | 8.5 | 88.6 | 2.3 | 2.6 | 301.5 | 9.8 | 3.3 |
| 3 | 48.3 | 2.0 | 4.2 | 93.5 | 1.9 | 2.0 | 305.4 | 6.6 | 2.1 |
b. Linearity/assay reportable range:
The sponsor performed linearity studies using adjusted whole blood samples with 11 different glucose concentration ranges from 20 to 500 mg/dL for FreeStyle 3 and 9 different glucose concentration ranges from 20-500 mg/dL for FreeStyle 5, FreeStyle
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Freedom, and FreeStyle Flash. Duplicate measurements were made with each concentration on 6 meters and 3 lots of test strips and the results compared to those obtained using YSI 2300. Resulting linear regression analyses were as follows:
| FreeStyle 3 | Lot 1 | y = 0.91x + 3.4, r² = 0.998 |
| --- | --- | --- |
| | Lot 2 | y = 0.90x + 1.6, r² = 0.998 |
| | Lot 3 | y = 0.93x + 3.5, r² = 0.998 |
| FreeStyle 5 | Lot 1 | y = 0.93x + 0.6, r² = 0.995 |
| --- | --- | --- |
| | Lot 2 | y = 0.95x - 2.0, r² = 0.994 |
| | Lot 3 | y = 0.97x + 1.1, r² = 0.995 |
| FreeStyle Freedom | Lot 1 | y = 0.91x + 7.4, r² = 0.994 |
| --- | --- | --- |
| | Lot 2 | y = 0.93x + 7.4, r² = 0.993 |
| | Lot 3 | y = 0.93x + 12.2, r² = 0.994 |
| FreeStyle Flash | Lot 1 | y = 0.93x + 1.4, r² = 0.995 |
| --- | --- | --- |
| | Lot 2 | y = 0.92x + 4.5, r² = 0.995 |
| | Lot 3 | y = 0.90x + 0.8, r² = 0.994 |
The claimed reportable range of the device is 20 to 500 mg/dL.
c. Traceability, Stability, Expected values (controls, calibrators, or methods): The method comparison was performed using the proposed device and YSI 2300 glucose analyzer.
Test strip stability was assessed in real-time and accelerated studies. The testing supported the claimed shelf life of 12 months when stored at 4-30°C with relative humidity of 5-90%.
The FreeStyle Control Solutions, Levels 1, 2, and 3 were previously cleared in k070850. Ranges for each control level are on the test strip vial labels.
c. Detection limit: The measuring range of the device is 20-500 mg/dL. This range was validated via the linearity study (see section M.1.b.).
d. Analytical specificity: The sponsor performed interference studies with spiked venous blood samples at two glucose concentrations (100 and 300 mg/dL) that were prepared and divided into a test (dosed) pool and a control pool. The interferents were added to the sample and each sample was analyzed in duplicate using 3 test strip lots on six of each type of meter (FreeStyle 3, FreeStyle 5, FreeSyle Freedom, and FreeStyle Flash). The bias between control and dosed samples were calculated for each substance as well as the bias of the dosed sample from the control for each substance tested. With the exception of xylose, all biases (control to dosed sample and dosed sample to YSI) were within ±10%. For xylose, a dose response study was conducted on 5 xylose levels (0-25 mg/dL) at two glucose concentrations (100 and 300 mg/dL). It was determined that the highest level of xylose at which no significant interference occurs is 6 mg/dL. A warning statement is included in the test strip insert that this device
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should not be used during xylose absorption testing. The table below lists all substances tested at concentrations with insignificant (<10%) interference:
| Substance | Concentration with <10% interference (mg/dL) |
| --- | --- |
| Acetaminophen | 20 |
| Ascorbate | 5 |
| B-hydroxybutyrate | 100 |
| Bilirubin | 20 |
| Cholesterol | 500 |
| Creatinine | 30 |
| Dopamine | 13 |
| Ephedrine | 10 |
| Galactose | 100 |
| Ibuprofen | 50 |
| Lactate | 100 |
| Lactose | 100 |
| L-dopa | 5 |
| Maltose | 100 |
| Methyl-dopa | 2.5 |
| Pyruvate | 10 |
| Salicylic acid | 50 |
| Tetracycline | 4 |
| Tolazamide | 100 |
| Tolbutamide | 100 |
| Triglyceride | 3000 |
| Uric acid | 40 |
| Xylose | 6 |
e. Assay cut-off: Not Applicable
2. Comparison studies:
a. Method comparison with predicate device:
FreeStyle 3
The sponsor conducted a combined accuracy and consumer study. Testing was conducted at 3 sites, with trained operators and a total of 178 lay-users. Each lay user participant performed their own fingerstick and tested their blood on the FreeStyle 3 meter using only the instructions in the user's manual and test strip insert. A trained operator then performed a second fingerstick and tested the blood on the same meter. Blood was also collected and measured on an YSI analyzer. The total range of samples tested was 32-492 mg/dL, with a hematocrit range of 29-59%. A total of 36 samples <50 mg/dL and >398 mg/dL were glycolyzed or spiked, respectively and tested by trained operators only. Linear regression results are presented below:
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Trained operator $\mathrm{y} = 0.94\mathrm{x} + 0.3,\mathrm{r}^2 = 1.00,\mathrm{x} = 214$
Lay user $\mathrm{y} = 0.96\mathrm{x} - 1.6,\mathrm{r}^2 = 0.99,\mathrm{x} = 178$
The study results met the ISO 15197 accuracy criteria where ninety-five percent (95%) of the individual glucose results fell within $\pm 15\mathrm{mg / dL}$ of the YSI results at glucose concentrations $< 75\mathrm{mg / dL}$ and within $\pm 20\%$ at glucose concentrations $\geq 75\mathrm{mg / dL}$ .
For glucose concentrations $< 75\mathrm{mg / dL}$
| | within ± 5 mg/dL | within ± 10 mg/dL | within ± 15 mg/dL |
| --- | --- | --- | --- |
| Trained operator | 27/29 (93.1%) | 29/29 (100%) | 29/29 (100%) |
| Lay user | 8/11 (72.7%) | 10/11 (90.9%) | 11/11 (100%) |
For glucose concentrations $\geq 75\mathrm{mg / dL}$
| | within ± 5 % | within ± 10 % | within ± 15 % | within ± 20 % |
| --- | --- | --- | --- | --- |
| Trained operator | 63/185 (34.1%) | 169/185 (91.4%) | 183/185 (98.9%) | 185/185 (100%) |
| Lay user | 69/167 (41.3%) | 160/167 (91.0%) | 166/167 (97.0%) | 167/167 (100%) |
# FreeStyle 5
The sponsor conducted a combined accuracy and consumer study. Testing was conducted at 3 sites, with trained operators and a total of 149 lay-users. Each lay user participant performed their own fingerstick and tested their blood on the FreeStyle 5 meter using only the instructions in the user's manual and test strip insert. A trained operator then performed a second fingerstick and tested the blood on the same meter. Blood was also collected and measured on an YSI analyzer. The total range of samples tested was $35 - 500\mathrm{mg / dL}$ , with a hematocrit range of $30 - 51\%$ . A total of 9 samples $<61\mathrm{mg / dL}$ and $>500\mathrm{mg / dL}$ were glycolyzed or spiked, respectively and tested by trained operators only. Linear regression results are presented below:
Trained operator $\mathrm{y} = 0.95\mathrm{x} - 0.34,\mathrm{r}^2 = 0.997,\mathrm{x} = 158$
Lay user $\mathrm{y} = 0.95\mathrm{x} - 1.7,\mathrm{r}^2 = 0.992,\mathrm{x} = 149$
The study results met the ISO 15197 accuracy criteria where ninety-five percent (95%) of the individual glucose results fell within $\pm 15\mathrm{mg / dL}$ of the YSI results at glucose concentrations $< 75\mathrm{mg / dL}$ and within $\pm 20\%$ at glucose concentrations $\geq 75\mathrm{mg / dL}$ .
For glucose concentrations $< 75\mathrm{mg / dL}$
| | within ± 5 mg/dL | within ± 10 mg/dL | within ± 15 mg/dL |
| --- | --- | --- | --- |
| Trained operator | 10/13 (77%) | 12/13 (92%) | 13/13 (100%) |
| Lay user | 1/3 (33%) | 2/3 (67%) | 3/3 (100%) |
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For glucose concentrations $\geq 75\,\mathrm{mg/dL}$
| | within ± 5 % | within ± 10 % | within ± 15 % | within ± 20 % |
| --- | --- | --- | --- | --- |
| Trained operator | 75/154 (49%) | 138/154 (90%) | 154/154 (100%) | 154/154 (100%) |
| Lay user | 62/146 (42%) | 111/146 (76%) | 139/146 (95%) | 145/146 (99%) |
## FreeStyle Freedom
The sponsor conducted a combined accuracy and consumer study. Testing was conducted at 3 sites, with trained operators and a total of 178 lay-users. Each lay user participant performed their own fingerstick and tested their blood on the FreeStyle Freedom meter using only the instructions in the user's manual and test strip insert. A trained operator then performed a second fingerstick and tested the blood on the same meter. Blood was also collected and measured on an YSI analyzer. The total range of samples tested was $33 - 494\,\mathrm{mg/dL}$, with a hematocrit range of $28 - 54\%$. A total of 10 samples $< 67\,\mathrm{mg/dL}$ and $>399\,\mathrm{mg/dL}$ were glycolyzed or spiked, respectively and tested by trained operators only. Linear regression results are presented below:
Trained operator $y = 0.98x + 6.1$, $r^2 = 0.997$, $x = 159$
Lay user $y = 0.98x + 5.9$, $r^2 = 0.989$, $x = 149$
The study results met the ISO 15197 accuracy criteria where ninety-five percent (95%) of the individual glucose results fell within $\pm 15\,\mathrm{mg/dL}$ of the YSI results at glucose concentrations $< 75\,\mathrm{mg/dL}$ and within $\pm 20\%$ at glucose concentrations $\geq 75\,\mathrm{mg/dL}$.
For glucose concentrations $< 75\,\mathrm{mg/dL}$
| | within ± 5 mg/dL | within ± 10 mg/dL | within ± 15 mg/dL |
| --- | --- | --- | --- |
| Trained operator | 8/13 (62%) | 11/13 (85%) | 13/13 (100%) |
| Lay user | 2/3 (67%) | 3/3 (100%) | 3/3 (100%) |
For glucose concentrations $\geq 75\,\mathrm{mg/dL}$
| | within ± 5 % | within ± 10 % | within ± 15 % | within ± 20 % |
| --- | --- | --- | --- | --- |
| Trained operator | 103/156 (66%) | 153/156 (98%) | 156/156 (100%) | 156/156 (100%) |
| Lay user | 99/146 (68%) | 1637146 (94%) | 144/146 (99%) | 146/146 (100%) |
## FreeStyle Flash
The sponsor conducted a combined accuracy and consumer study. Testing was conducted at 3 sites, with trained operators and a total of 150 lay-users. Each lay user participant performed their own fingerstick and tested their blood on the FreeStyle Flash meter using only the instructions in the user's manual and test strip insert. A
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trained operator then performed a second fingerstick and tested the blood on the same meter. Blood was also collected and measured on an YSI analyzer. The total range of samples tested was $33 - 492\mathrm{mg / dL}$ , with a hematocrit range of $28 - 54\%$ . A total of 8 samples $< 62\mathrm{mg / dL}$ and $>394\mathrm{mg / dL}$ were glycolyzed or spiked, respectively and tested by trained operators only. Linear regression results are presented below:
Trained operator $y = 0.96x - 1.0, r^2 = 0.997, x = 158$
Lay user $y = 0.95x - 0.6, r^2 = 0.993, x = 150$
The study results met the ISO 15197 accuracy criteria where ninety-five percent (95%) of the individual glucose results fell within $\pm 15\mathrm{mg / dL}$ of the YSI results at glucose concentrations $< 75\mathrm{mg / dL}$ and within $\pm 20\%$ at glucose concentrations $\geq 75\mathrm{mg / dL}$ .
For glucose concentrations $< 75\mathrm{mg / dL}$
| | within ± 5 mg/dL | within ± 10 mg/dL | within ± 15 mg/dL |
| --- | --- | --- | --- |
| Trained operator | 9/15 (60%) | 15/15 (100%) | 15/15 (100%) |
| Lay user | 3/3 (100%) | 3/3 (100%) | 3/3 (100%) |
For glucose concentrations $\geq 75\mathrm{mg / dL}$
| | within ± 5 % | within ± 10 % | within ± 15 % | within ± 20 % |
| --- | --- | --- | --- | --- |
| Trained operator | 89/155 | 133/155 | 154/155 | 155/155 |
| | (57%) | (86%) | (99%) | (100%) |
| Lay user | 76/147 | 122/147 | 144/147 | 147/147 |
| | (52%) | (83%) | (98%) | (100%) |
# Alternative Site Testing
# FreeStyle 3
The sponsor conducted alternative site studies on the palm and upper arm at 2 clinical sites with lay users. Participants obtained samples from either their palm or upper arm and tested these samples on the FreeStyle 3 meter using only the instructions in the user's manual and test strip insert. A trained operator then obtained palm and upper arm samples from the participants and tested these samples on the same meter. Venous blood was also collected and measured on an YSI analyzer. Linear regression results are presented below:
palm trained operator $y = 1.01x - 0.2, r^2 = 0.995, x = 69$
lay user $y = 0.97x + 2.1, r^2 = 0.981, x = 64$
upper arm trained operator $y = 1.01x - 0.9, r^2 = 0.994, x = 76$
lay user $y = 0.96x + 1.2, r^2 = 0.971, x = 75$
Both the palm and upper arm alternative site results met the ISO 15197 accuracy criteria where ninety-five percent (95%) of the individual glucose results fell within
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$\pm 15 \mathrm{mg} / \mathrm{dL}$ of the YSI results at glucose concentrations $< 75 \mathrm{mg} / \mathrm{dL}$ and within $\pm 20\%$ at glucose concentrations $\geq 75 \mathrm{mg} / \mathrm{dL}$ .
For glucose concentrations $< 75 \, \mathrm{mg/dL}$
| | | within ± 5 mg/dL | within ± 10 mg/dL | within ± 15 mg/dL |
| --- | --- | --- | --- | --- |
| Palm | Trained operator | 3/4 (75%) | 4/4 (100%) | 4/4 (100%) |
| | Lay user | 2/4 (50%) | 3/4 (75%) | 4/4 (100%) |
| Upper arm | Trained operator | 0/0 (0%) | 0/0 (0%) | 0/0 (0%) |
| | Lay user | 0/0 (0%) | 0/0 (0%) | 0/0 (0%) |
For glucose concentrations $\geq 75\mathrm{mg / dL}$
| | | within ± 5 % | within ± 10% | within ± 15 % | within ± 20 % |
| --- | --- | --- | --- | --- | --- |
| Palm | Trained operator | 46/65 (71%) | 63/65 (97%) | 65/65 (100%) | 65/65 (100%) |
| | Lay user | 37/60 (62%) | 53/60 (88%) | 59/60 (98%) | 60/60 (100%) |
| Upper arm | Trained operator | 42/76 (55%) | 65/76 (86%) | 72/76 (95%) | 74/76 (97%) |
| | Lay user | 39/75 (52%) | 59/75 (79%) | 68/75 (91%) | 71/75 (95%) |
# FreeStyle 5
The sponsor conducted alternative site studies on the palm and upper arm at 2 clinical sites with lay users. Participants obtained samples from either their palm or upper arm and tested these samples on the FreeStyle 5 meter using only the instructions in the user's manual and test strip insert. A trained operator then obtained palm and upper arm samples from the participants and tested these samples on the same meter. Venous blood was also collected and measured on an YSI analyzer. Linear regression results are presented below:
palm trained operator $y = 0.95x + 1.8, r^2 = 0.995, x = 75$
lay user $y = 0.97x - 3.3, r^2 = 0.992, x = 75$
upper arm trained operator $y = 0.98x - 3.8, r^2 = 0.990, x = 75$
lay user $y = 0.99x - 5.9, r^2 = 0.985, x = 75$
Both the palm and upper arm alternative site results met the ISO 15197 accuracy criteria where ninety-five percent (95%) of the individual glucose results fell within $\pm 15\mathrm{mg / dL}$ of the YSI results at glucose concentrations $< 75\mathrm{mg / dL}$ and within $\pm 20\%$ at glucose concentrations $\geq 75\mathrm{mg / dL}$ .
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For glucose concentrations $< 75\mathrm{mg / dL}$
| | | within ± 5 mg/dL | within ± 10 mg/dL | within ± 15 mg/dL |
| --- | --- | --- | --- | --- |
| Palm | Trained operator | 1/2 (50%) | 1/2 (50%) | 2/2 (100%) |
| | Lay user | 0/2 (0%) | 1/2 (50%) | 2/2 (100%) |
| Upper arm | Trained operator | 1/1 (100%) | 1/1 (100%) | 1/1 (100%) |
| | Lay user | 1/1 (100%) | 1/1 (100%) | 1/1 (100%) |
For glucose concentrations $\geq 75\mathrm{mg / dL}$
| | | within ± 5 % | within ± 10% | within ± 15 % | within ± 20 % |
| --- | --- | --- | --- | --- | --- |
| Palm | Trained operator | 40/73 (55%) | 66/73 (90%) | 73/73 (100%) | 73/73 (100%) |
| | Lay user | 36/73 (49%) | 59/73 (81%) | 71/73 (97%) | 73/73 (100%) |
| Upper arm | Trained operator | 37/74 (50%) | 62/74 (84%) | 70/74 (95%) | 72/74 (97%) |
| | Lay user | 31/74 (42%) | 57/74 (77%) | 68/74 (92%) | 72/74 (97%) |
# FreeStyle Freedom
The sponsor conducted alternative site studies on the palm and upper arm at 2 clinical sites with lay users. Participants obtained samples from either their palm or upper arm and tested these samples on the FreeStyle Freedom meter using only the instructions in the user's manual and test strip insert. A trained operator then obtained palm and upper arm samples from the participants and tested these samples on the same meter. Venous blood was also collected and measured on an YSI analyzer. Linear regression results are presented below:
palm trained operator $\mathrm{y} = 1.02\mathrm{x} + 5.2,\mathrm{r}^2 = 0.994,\mathrm{x} = 75$
lay user $\mathrm{y} = 1.01\mathrm{x} + 4.2,\mathrm{r}^2 = 0.989,\mathrm{x} = 74$
upper arm trained operator $\mathrm{y} = 0.99\mathrm{x} + 5.7,\mathrm{r}^2 = 0.982,\mathrm{x} = 73$
lay user $\mathrm{y} = 0.98\mathrm{x} + 4.4,\mathrm{r}^2 = 0.978,\mathrm{x} = 73$
Both the palm and upper arm alternative site results met the ISO 15197 accuracy criteria where ninety-five percent (95%) of the individual glucose results fell within $\pm 15\mathrm{mg / dL}$ of the YSI results at glucose concentrations $< 75\mathrm{mg / dL}$ and within $\pm 20\%$ at glucose concentrations $\geq 75\mathrm{mg / dL}$ .
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For glucose concentrations $< 75\mathrm{mg / dL}$
| | | within ± 5 mg/dL | within ± 10 mg/dL | within ± 15 mg/dL |
| --- | --- | --- | --- | --- |
| Palm | Trained operator | 1/2 (50%) | 2/2 (100%) | 2/2 (100%) |
| | Lay user | 2/2 (100%) | 2/2 (100%) | 2/2 (100%) |
| Upper arm | Trained operator | 0/1 (0%) | 1/1 (100%) | 1/1 (100%) |
| | Lay user | 0/1 (0%) | 0/1 (0%) | 1/1 (100%) |
For glucose concentrations $\geq 75\mathrm{mg / dL}$
| | | within ± 5 % | within ± 10% | within ± 15 % | within ± 20 % |
| --- | --- | --- | --- | --- | --- |
| Palm | Trained operator | 37/43 (47%) | 58/73 (79%) | 71/73 (97%) | 72/73 (99%) |
| | Lay user | 39/72 (54%) | 62/72 (86%) | 71/72 (99%) | 72/72 (100%) |
| Upper arm | Trained operator | 36/72 (50%) | 61/72 (85%) | 70/72 (97%) | 70/72 (97%) |
| | Lay user | 41/72 (57%) | 57/72 (79%) | 67/72 (93%) | 71/72 (99%) |
# FreeStyle Flash
The sponsor conducted alternative site studies on the palm and upper arm at 2 clinical sites with lay users. Participants obtained samples from either their palm or upper arm and tested these samples on the FreeStyle Flash meter using only the instructions in the user's manual and test strip insert. A trained operator then obtained palm and upper arm samples from the participants and tested these samples on the same meter. Venous blood was also collected and measured on an YSI analyzer. Linear regression results are presented below:
palm trained operator $\mathrm{y} = 1.00\mathrm{x} - 1.8,\mathrm{r}^2 = 0.993,\mathrm{x} = 69$ lay user $\mathrm{y} = 0.98\mathrm{x} - 1.6,\mathrm{r}^2 = 0.987,\mathrm{x} = 74$
upper arm trained operator $\mathrm{y} = 0.99\mathrm{x} - 4.8,\mathrm{r}^2 = 0.988,\mathrm{x} = 75$ lay user $\mathrm{y} = 0.99\mathrm{x} - 6.4,\mathrm{r}^2 = 0.983,\mathrm{x} = 74$
Both the palm and upper arm alternative site results met the ISO 15197 accuracy criteria where ninety-five percent (95%) of the individual glucose results fell within $\pm 15\mathrm{mg / dL}$ of the YSI results at glucose concentrations $< 75\mathrm{mg / dL}$ and within $\pm 20\%$ at glucose concentrations $\geq 75\mathrm{mg / dL}$ .
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For glucose concentrations $< 75\mathrm{mg / dL}$
| | | within ± 5 mg/dL | within ± 10 mg/dL | within ± 15 mg/dL |
| --- | --- | --- | --- | --- |
| Palm | Trained operator | 1/2 (50%) | 2/2 (100%) | 2/2 (100%) |
| | Lay user | 1/2 (50%) | 2/2 (100%) | 2/2 (100%) |
| Upper arm | Trained operator | 1/1 (100%) | 1/1 (100%) | 1/1 (100%) |
| | Lay user | 0/1 (0%) | 1/1 (100%) | 1/1 (100%) |
For glucose concentrations $\geq 75\mathrm{mg / dL}$
| | | within ± 5 % | within ± 10% | within ± 15 % | within ± 20 % |
| --- | --- | --- | --- | --- | --- |
| Palm | Trained operator | 50/67 (75%) | 63/67 (94%) | 67/67 (100%) | 67/67 (100%) |
| | Lay user | 45/72 (63%) | 62/72 (86%) | 66/72 (92%) | 70/72 (97%) |
| Upper arm | Trained operator | 31/74 (42%) | 57/74 (77%) | 71/74 (96%) | 73/74 (99%) |
| | Lay user | 30/73 (41%) | 48/73 (66%) | 65/73 (89%) | 71/73 (97%) |
b. Matrix comparison: Not applicable.
3. Clinical studies:
a. Clinical Sensitivity: Not Applicable.
b. Clinical specificity: Not Applicable
c. Other clinical supportive data (when a. and b. are not applicable): Not applicable.
4. Clinical cut-off: Not Applicable
5. Expected values/Reference range: Expected blood glucose levels for a non-diabetic, non-pregnant adult (referenced from the American Diabetes Association, Clinical Practice Recommendations; Diagnosis and classification of diabetes mellitus. Diabetes Care, 2005; 28 (Suppl. 1); S37-S42.
Time
Fasting
Two hours after meals
Range (mg/dL)
less than 100
less than 140
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N. Instrument Name:
FreeStyle 3 Blood Glucose Meter
FreeStyle 5 Blood Glucose Meter
FreeStyle Freedom Blood Glucose Meter
FreeStyel Flash Blood Glucose Meter
O. System Descriptions:
1. Modes of Operation:
Each test strip is single use and must be replaced with a new strip for additional readings.
Does the applicant’s device contain the ability to transmit data to a computer, webserver, or mobile device?:
Yes ______ or No ☐
Does the applicant’s device transmit data to a computer, webserver, or mobile device using wireless transmission?:
Yes ______ or No ☐
2. Software:
FDA has reviewed applicant’s Hazard Analysis and software development processes for this line of product types:
Yes ☐ or No ☑
The applicant has provided documentation that indicates the device was designed and developed under good software life-cycle processes.
3. Specimen Identification:
There is no sample identification function with this device. Samples are applied directly to the test strip as they are collected.
4. Specimen Sampling and Handling:
This device is intended to be used with capillary whole blood, which can be applied directly to the test strip.
5. Calibration:
The FreeStyle 3, 5, Freedom and Flash Blood Glucose Monitoring Systems require coding by the user by matching the number on the meter display to that printed on the test strip vial.
6. Quality Control:
The sponsor provides a normal control solution with the device and instructions when to test. Two other levels (low and high) are available for purchase from the sponsor. An
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acceptable range for each control level is printed on the test strip vial label. The user is referred to the troubleshooting section of the owner's manual if control results fall outside these ranges.
P. Other Supportive Instrument Performance Characteristics Data Not Covered In The "Performance Characteristics" Section above:
Hematocrit Study:
A study to evaluate the effect of hematocrit was conducted on samples with 6 glucose concentrations (36-44, 81-99, 162-198, 253-297, 324-396, and 400-500 mg/dL) at 7 hematocrit levels (15, 20, 25, 40, 55, 60, and 65%). Each glucose level/hematocrit combination was tested in duplicate on 6 of each type of meter (FreeStyle 3, FreeStyle 5, FreeStyle Freedom, and FreeStyle Flash) using 3 lots of test strips. Results of samples at each hematocrit level were compared to samples with the same glucose concentration at normal (40%) hematocrit as well as to the corresponding YSI value. All results for each meter type met the acceptance criteria of ±15% which supports the claimed hematocrit range of 15-65%.
Altitude study:
An altitude study was performed at elevations up to 10,000 feet with 60 tests each of 3 different concentrations of glucose spiked whole blood spanning 36 to 440 mg/dL. Sea level results were compared to results at higher elevations and to YSI values, with all results on each type of meter meeting the sponsor's acceptance criteria of ±10%
Temperature and humidity studies:
Temperature and humidity studies were conducted on each type of meter that demonstrated that the devices can be used at temperatures of 4 to 40°C and at a relative humidity of 5 to 90%, and stored at temperatures of 4 to 30°C with a relative humidity of 5 to 90%.
The sponsor provided a readability study and obtained Flesch-Kincaid grade level scores of 8 or lower for the User's Manual and test strip insert.
Q. Proposed Labeling:
The labeling is sufficient and it satisfies the requirements of 21 CFR Part 809.10.
R. Conclusion:
The submitted information in this premarket notification is complete and supports a substantial equivalence decision.
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