VITROS Chemistry Products K+ DT Slides quantitatively measure potassium (K+) concentration in serum and plasma using VITROS DT60 and DT60 II Chemistry Systems. Potassium measurements are used to monitor electrolyte balance in the diagnosis and treatment of diseases or conditions characterized by low or high blood potassium levels. For in vitro diagnostic use only. VITROS Chemistry Products DT Calibrator Kit is specially formulated for use as calibrators for the quantitative measurement of ALB, ALKP, ALT, AMYL, AST, TBIL, NBIL, BUN/UREA, Ca, CHOL, CK, CI-, Co2, CREA, CRSC, Fe, GGT, GLU, HDLC, K+, LAC, LDH, LIPA, Mg, Na+, NH3, PHOS, TP, TRIG, urCR, and URIC on VITROS DT Chemistry Systems. For in vitro diagnostic use only.
Device Story
VITROS Chemistry Products K+DT Slides; in vitro diagnostic reagent for quantitative determination of potassium in serum, plasma, and urine; used on VITROS Chemistry Systems; modification involves replacing nickel with nickel-chromium in reagents and ion selective electrode (ISE) stripes; manufacturing process changed from electron beam evaporation to magnetic sputter deposition; device remains substantially equivalent to previously cleared VITROS products.
Clinical Evidence
Bench testing only; design control activities and risk analysis performed to validate modifications to reagent composition and manufacturing process.
Technological Characteristics
Ion selective electrode (ISE) technology; reagent composition: 80% nickel, 20% chromium; manufacturing: magnetic sputter deposition; intended for use with VITROS Chemistry Systems.
Indications for Use
Indicated for quantitative measurement of potassium (K+) in serum and plasma to monitor electrolyte balance in patients with conditions characterized by abnormal blood potassium levels.
Regulatory Classification
Identification
A potassium test system is a device intended to measure potassium in serum, plasma, and urine. Measurements obtained by this device are used to monitor electrolyte balance in the diagnosis and treatment of diseases conditions characterized by low or high blood potassium levels.
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SPECIAL 510(k): Device Modification
OIVD Review Memorandum (Decision Making Document is Attached)
To: THE FILE
RE: DOCUMENT NUMBER k083680
This 510(k) submission contains information/data on modifications made to the SUBMITTER'S own Class II, Class III or Class I devices requiring 510(k). The following items are present and acceptable (delete/add items as necessary):
1. The name and 510(k) number of the SUBMITTER'S previously cleared device. (For a preamendments device, a statement to this effect has been provided.) K912844 (VITROS Chemistry Products K+DT Slides) and k082099 (VITROS Chemistry Products DT Calibrator Kit).
2. Submitter's statement that the INDICATION/INTENDED USE of the modified device as described in its labeling HAS NOT CHANGED along with the proposed labeling which includes instructions for use, package labeling, and, if available, advertisements or promotional materials (labeling changes are permitted as long as they do not affect the intended use).
3. A description of the device MODIFICATION(S), including clearly labeled diagrams, engineering drawings, photographs, user's and/or service manuals in sufficient detail to demonstrate that the FUNDAMENTAL SCIENTIFIC TECHNOLOGY of the modified device has not changed.
This change was for 3 items:
1. The nickel in the reagents will be replaced with nickel-chromium.
2. The composition of Ion selective electrode will change its nickel stripes to include chromium. The predicate device contained 99% nickel whereas the current device has 80% nickel and 20% chromium.
3. The manufacturing process for the ISE baseweb was previously made with electron beam evaporation and the current device is prepared with magnetic sputter deposition.
4. Comparison Information (similarities and differences) to applicant's legally marketed predicate device including, labeling, intended use, technology, physical characteristics, and sample type. The differences are shown in number 3.
5. A Design Control Activities Summary which includes:
a) Identification of Risk Analysis method(s) used to assess the impact of the modification on the device and its components, and the results of the analysis
b) Based on the Risk Analysis, an identification of the verification and/or validation activities required, including methods or tests used and acceptance criteria to be applied
c) A declaration of conformity with design controls. The declaration of conformity should include:
i) A statement signed by the individual responsible, that, as required by the risk analysis, all verification and validation activities were performed by the designated individual(s) and the results demonstrated that the predetermined acceptance criteria were met, and
ii) A statement signed by the individual responsible, that the manufacturing facility is in conformance with design control procedure requirements as specified in 21 CFR 820.30 and the records are available for review.
6. A Truthful and Accurate Statement, a 510(k) Summary or Statement and the Indications for Use Enclosure (and Class III Summary for Class III devices).
The labeling for this modified subject device has been reviewed to verify that the indication/intended use for the device is unaffected by the modification. In addition, the submitter's description of the particular modification(s) and the comparative information between the modified and unmodified devices demonstrate that the fundamental scientific technology has not changed. The submitter has provided the design control information as specified in The New 510(k) Paradigm and on this basis, I recommend the device be determined substantially equivalent to the previously cleared (or their preamendment) device.
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