GREERTRACK SKIN TESTING SYSTEM, MODEL GT-IT, GT-IC
K003195 · Greer Laboratories, Inc. · SCL · Dec 13, 2000 · General Hospital
Device Facts
Record ID
K003195
Device Name
GREERTRACK SKIN TESTING SYSTEM, MODEL GT-IT, GT-IC
Applicant
Greer Laboratories, Inc.
Product Code
SCL · General Hospital
Decision Date
Dec 13, 2000
Decision
SESE
Submission Type
Traditional
Regulation
21 CFR 880.5570
Device Class
Class 2
Attributes
Pediatric
Indications for Use
The device system is for use in the prick/puncture application of allergen extracts The epicutaneous layer of the skin in the performance of skin testing for immediate type hypersensitivity reactions in those individuals suspected of having allergies.
Device Story
GreerTRACK Skin Testing System facilitates prick/puncture application of allergen extracts into the epicutaneous skin layer. System components: sterile, single-use, injection-molded thermoplastic polymer 'Track' (four sites, four tines each); reusable handle (plastic body, stainless steel screws/spring, metal trigger/latch); reusable polystyrene loading tray. Used in physician clinics or hospitals by medical professionals. Clinician loads allergen extracts into tray, attaches Tracks to handle, and applies to patient skin (volar surface of arms or back). Device enables simultaneous application of eight allergen/control extracts. Output is a skin reaction (wheal/erythema) used by clinicians to diagnose hypersensitivity. Benefits include standardized, efficient, multi-site allergen delivery compared to individual application methods.
Clinical Evidence
Bench testing and comparative clinical performance study. Study involved 12 individuals comparing GreerTRACK to GreerPICK using histamine (positive control) and glycerosaline (negative control). GreerTRACK performed 46 applications per solution; GreerPICK performed 19. Primary endpoints: measurements of largest and orthogonal diameters for erythema and wheal reactions. Results showed GreerTRACK elicited reactions comparable to GreerPICK, with clear distinguishability between positive, negative, and 10-fold diluted positive controls.
Technological Characteristics
System consists of single-use thermoplastic polymer Tracks and reusable handle (plastic, stainless steel, metal trigger). Tracks are injection-molded and meet USP Class VI biocompatibility criteria. Sterilization: Gamma irradiation. Form factor: Multi-site (8-site) applicator. Connectivity: None (mechanical device).
Indications for Use
Indicated for individuals suspected of having allergies, including adults and children, for the performance of skin testing to detect immediate type hypersensitivity reactions.
Regulatory Classification
Identification
A hypodermic single lumen needle is a device intended to inject fluids into, or withdraw fluids from, parts of the body below the surface of the skin. The device consists of a metal tube that is sharpened at one end and at the other end joined to a female connector (hub) designed to mate with a male connector (nozzle) of a piston syringe or an intravascular administration set.
Predicate Devices
GreerPICK (DermaPICK) Skin Test Device
Submission Summary (Full Text)
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November 1, 2024
Greer Laboratories, Incorporated Gerald Friesen Vice President of Quality 639 Nuway Circle, Northeast P.O. Box 800 Lenoir, North Carolina 28645-0800
Re: K003195
Trade/Device Name: GreerTRACK Skin Testing System Regulation Number: 21 CFR 880.5570 Regulation Name: Hypodermic single lumen needle Regulatory Class: Class II Product Code: SCL
Dear Gerald Friesen:
The Food and Drug Administration (FDA) is sending this letter to notify you of an administrative change related to your previous substantial equivalence (SE) determination letter dated December 13, 2000. Specifically, FDA is updating this SE Letter because FDA has better categorized your device technology under product code SCL.
Please note that the 510(k) submission was not re-reviewed. For questions regarding this letter please contact David Wolloscheck, OHT3: Office of GastroRenal, OB-Gyn, General Hospital and Urology Devices, 301-796-1480, David.Wolloscheck(@fda.hhs.gov.
Sincerelv.
# David Wolloscheck -S
David Wolloscheck, Ph.D. Assistant Director DHT3C: Division of Drug Delivery and General Hospital Devices and Human Factors OHT3: Office of GastroRenal, OB-Gyn, General Hospital and Urology Devices Office of Product Evaluation and Quality Center for Devices and Radiological Health
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## DEPARTMENT OF HEALTH & HUMAN SERVICES
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#### Public Health Service
Food and Drug Administration 9200 Corporate Boulevard Rockville MD 20850
# DEC 1 3 2000
Mr. Gerald Friesen Vice President of Quality Greer Laboratories, Incorporated 639 Nuway Circle, Northeast P.O. Box 800 Lenoir, North Carolina 28645-0800
K003195 Re : GreerTRACK Skin Testing System Trade Name: Unclassified Regulatory Class: LDH Product Code: 2000 October 11, Dated: October 12, 2000 Received:
Dear Mr. Friesen:
We have reviewed your Section 510(k) notification of intent to We have reviewed your bection brown and we have determined the market the for market the device referenced above (for the indications for device is substancially equature) to legally marketed were 28 use stated in the encrosate, commerce prior to May 28, 1976, devices marketed in theerbace al Device Amendments, or to the enactment date of the nassified in accordance with the devices that have been recrabblians of Cosmetic Act (Act). provisions of the rederal took, subject to the general The general controls controls provisions of the Act. controls provisions of cho include requirements for annual provisions of the Act Includes, good manufacturing practice, registration, firsting or acainst misbranding and adulteration.
If your device is classified (see above) into either class II), it may If your device is crabblied (so(Premarket Approval), it may (Special Controls) or class i controls. Existing major be subject to such addicional can be found in the Code of Federal Regulations, Title 21, Parts 800 to 895. ಕ್ಕಿ rederal Regulations, freis and somes compliance with Substantly equivalence aring Practice requirements, as set the Current Cood namesustem Regulation (QS) for Medical rorth in the Quarrey Bytion (21 CFR Part 820) and that, Devices. Ocheral QS inspections, the Food and Drug through perrodic go inbpoority such assumptions. Failure to Administracton (rbi) wirl toon may result in regulatory comply with the ont regainmay publish further announcements accion. In addression in the Federal Register. Please note: concerning your device in enket notification submission does chis response to your promobility have under sections 531 not arrect any obligation for devices under the Electronic
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Page 2 - Mr. Friesen
Product Radiation Control provisions, or other Federal laws or regulations.
This letter will allow you to begin marketing your device as This lecter will arrows) ) a premarket notification.
described in your 510 (k) premarket not sour dayigo The FDA described in your 510(K) prematice of your device to a legally marketed predicate device results in a classification for your marketed predicate device rebares in a spoceed to the market.
If you desire specific advice for your device on our labeling if you desire specific advice additionally 809.10 for in regulation (21 cm Fare ovi and contact the Office of compliance at (301) 594-4692. Additionally, for questions on Compliance at (301) 534 size: for your device, please contact the promotion and advertibing of Jour and Submittee of Complease note the regulation entitled, "Misbranding by reference to premarket notification" (21CFR 807.97). Other general premarket notification - (zich ities under the Act may be information on your responsible and Manufacturers Assistance obtained from the bivision of billing (801) 443-6597 or at its internet address
"http://www.fda.gov/cdrh/dsma/dsmamain.html".
Sincerely yours
Timothy A. Ulatowski
Director
Division of Dental, Infection Control and General Hospital Devices Office of Device Evaluation Center for Devices and Radiological Health
2
Enclosure
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Page
510(k) Number (if known): 长ወ o 3/9 ≤
Device Name: GreerTRACK Skin Testing System
Indications For Use:
The device system is for use in the prick/puncture application of allergen extracts The epicutaneous layer of the skin in the performance of skin testing for immediate type hypersensitivity reactions in those individuals suspected of having allergies.
(PLEASE DO NOT WRITE BELOW THIS LINE - CONTINUE ON ANOTHER PAGE IF NEEDED)
Concurrence of CDRH, Office of Device Evaluation (ODE)
Patacio Vincente
1. 1748 400 Division of Den. and General Hospia 510(k) Number --
(Optional Format 3-10-98)
3
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K003195
DEC 1 3 2000
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POST OFFICE BOX 800 · 639 NUWAY CIRCLE · LENOIR, NORTH CAROLINA 28645 U.S.A. PHONE: 828/754-5327 or 800/438-0088 • FAX: 828/754-5320 www.greerlabs.com
S
(104) SUMMARY
#### 510(k) SUMMARY
Submitter:
Greer Laboratories, Inc. 639 Nuway Circle NE Lenoir, NC 28645 phone: (828) 754-5327 fax: (828) 754-5320
Contact:
Date:
Device Name:
Common/ Classification Name:
Predicate Device:
Description:
10 October, 2000
Vice President, Quality
Gerald Friesen, PharmD
GreerTRACK Skin Testing System
System, Delivery, Allergen and Vaccine
GreerPICK (DermaPICK) Skin Test Device
The device system is comprised of both single-use and reusable components. The device includes:
- 1) The Track a sterile, single-use, injection molded, plastic piece with four sites having four tines each, intended to deliver the allergens into the epicutaneous layer of the skin. The Track is injection molded from a thermoplastic polymer. The material has been tested to meet USP Class VI performance criteria for biocompatibility. The Tracks are packaged in a PETG tray sealed with a tyvek lid, eight Tracks per tray.
- 2) A reusable Handle designed to "pick-up" and hold one or two Tracks. The Handle is constructed of a plastic body, stainless steel metal screws, and spring, and a machined, extruded metal trigger/latch mechanism designed to engage and hold the Tracks.
- 3) A reusable polystyrene plastic Loading Tray designed to hold one Handle with attached Tracks, and eight vials of allergen extracts.
Prick/puncture application of multiple allergen extracts in the performance of skin testing for immediate type hypersensitivity reactions in those individuals suspected of having allergies.
Intended Use:
Pride in Excellence®
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| GreerTRACK | TARGET POPULATION<br>The device is intended for use by medical professionals in the testing of<br>individuals suspected of having allergies. |
|------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| GreerPICK | The device is intended for use by medical professionals in the testing of<br>individuals suspected of having allergies. |
| GreerTRACK | DESIGN<br>The device is designed to apply 8 allergen/control extracts<br>simultaneously. |
| GreerPICK | The device is designed to individually apply allergen/control extracts. |
| GreerTRACK | MATERIAL<br>thermoplastic polymer. |
| GreerPICK | thermoplastic polymer. |
| GreerTRACK | PERFORMANCE<br>The device introduces allergens/controls through prick/puncture of the<br>epicutaneous layer of the skin. |
| GreerPICK | The device introduces allergens/controls through prick/puncture of the<br>epicutaneous layer of the skin. The device can also be used to "scratch"<br>the surface of the skin to introduce the allergen/control. |
| GreerTRACK | STERILITY<br>The product is terminally sterilized by gamma irradiation. |
| GreerPICK | The product is terminally sterilized by ethylene oxide (ETO) exposure. |
| GreerTRACK | BIOCOMPATIBILITY<br>Epicutaneous contact only, not intended for implantation; the material<br>has been tested to meet USP Class VI criteria. |
| GreerPICK | Epicutaneous contact only, not intended for implantation; the material<br>has been tested to meet USP Class VI criteria. |
| GreerTRACK | ANATOMICAL SITES<br>The device is intended for the application of allergen/control extracts to<br>the typical sites used in the performance of allergy skin testing (volar<br>surface of the arms and back). |
| GreerPICK | The device is intended for the application of allergen/control extracts to<br>the typical sites used in the performance of allergy skin testing (volar<br>surface of the arms and back). |
| GreerTRACK | WHERE USED<br>Intended for use in physician clinic setting and/or hospital. |
| GreerPICK | Intended for use in physician clinic setting and/or hospital |
### Technological Charateristics: Comparison to Predicate Device
:
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#### Clinical Performance
To verify the qualitative comparability of the GreerPICK to the GreerPICK in the performance of the application of skin test materials, both devices were tested side-byside using histamine as the positive control, and glycerosaline as the negative control. Twelve (12) individuals had a total of 46 applications each of histamine, at both 5 and 0.5 mg/mL, and glycerosaline using the GreerTRACK. The same individuals also had a total of 19 applications of each solution using the GreerPICK. Measurements of the largest and orthogonal diameters for both the erythema and wheal reactions were made and tabulated. The sums of these reactions were calculated as were the overall means and standard deviations for the reactions measured for each test solution.
#### Conclusions
Results confirm that testing with the GreerTRACK elicits comparable reactions to those elicited by the GreerPICK. As for the GreerPICK, the GreerTRACK can elicit a reaction to a 10 fold dilution of the positive control that is intermediate between the positive and negative controls, and is clearly distinguishable from the reaction associated with the negative control.
Two short videos show you everything — or skip straight to the written tutorial if you'd rather read. You can reopen this any time from the Tutorial button in the top bar.
Part 1 — Search, results, and everyday workflows 16 min
Part 2 — Embeddings: the galaxy map 3 min
1. Search: exact and fuzzy
Type a phrase like "coronary artery calcification" into the search box. You get two kinds of results. Exact results match the literal phrase — prefix searches work ("coronary artery calcificati") but suffix searches do not. Fuzzy results match on the meaning and intent of your phrase rather than the exact words, and are sorted by relevance score. Hover over the Exact or Fuzzy badge on any row to see exactly why it matched.
Use the checkboxes above the results to narrow: SaMD keeps only software-only devices, AI / ML keeps only devices with AI.
Exact vs. fuzzy search: what's the difference?
Exact matches on the literal phrase (prefix search works, suffix does not). Fuzzy matches on the meaning and intent of the phrase rather than the exact words. Hover over the badge on any row to see why it matched.
You search "coronary artery calcification" and want only software devices with AI. What two filters do you apply?
Narrow by SaMD (software-only devices), then narrow by AI/ML (devices with AI).
2. The results table
Scroll right in the results table. The intended use is extracted for you — no need to open the PDF. The device story gives a high-level snapshot of what the device does and how it's used. The AI Performance sub-table shows each output name, acceptance criteria, observed values, and development/test dataset descriptions — the same format Innolitics uses for regulatory strategy outputs, and the fastest high-level fingerprint of an AI device. It is AI-generated but has been very reliable in practice.
Where do you find a device's intended use without opening the PDF?
Scroll right in the search results table. The intended use column is extracted for you; no need to dig into the 510(k) summary PDF.
What does the AI Performance sub-table show, and why is it useful?
Output name, acceptance criteria, observed values, development dataset description, and test dataset description. It's the same format we use for regulatory strategy output and Fast 510(k) input, and the fastest high-level fingerprint of an AI device. AI-generated but reliable in practice.
3. Judging fuzzy relevance
Fuzzy results trail off in relevance as you scroll. Use three signals to decide how far down to go: the fuzzy badge explanations, the intended use column, and whether your target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, you're past the relevant zone. A top hit with a low score (~0.4) and a stretched explanation is a hint the closest predicates are far away — the project may be headed for De Novo. Note the fuzzy search is a pattern match: it doesn't handle negation ("not") well, and hardware devices can appear — filter by SaMD/AI ML to cut them.
How do you judge how far down fuzzy search results to go?
Use the relevancy signals: the fuzzy badge explanations, the intended use column, and whether the target output (e.g., Cobb angle) still appears in the AI Performance sub-table. Once it stops appearing, results are trailing off in relevancy.
4. Device detail page: chat and citations
Click a device name to open its detail page: device facts on the left, a chat window on the right. Ask something like "Describe the training data". The answer carries little citation bubbles — click one to jump to the highlighted passage in the source PDF, so you can verify every AI answer against the document. There's also a Download PDF button for sharing.
How do you verify an AI chat answer on the device detail page?
Click the citation bubbles to jump to the relevant highlight in the source document.
Reading rule for every project: how many summaries do you read in full?
At least the three most relevant 510(k) or De Novo summaries, in full. After that, use targeted chat questions to confirm your memory quickly. The tool supports this professional habit — it doesn't replace it.
5. Side-by-side comparison
Select multiple rows in the results table (aim for under ~10), then open the PDF Viewer tab. Ask one question — it goes to all selected devices in parallel, each with citations. This is the fastest way to compare and contrast devices: training data, PCCP scope, how they handled adding new scanners, and so on.
What does the side-by-side PDF viewer mode do?
Select multiple devices, open the PDF viewer tab, and ask one question (e.g., "Describe the training data"). It queries all selected devices simultaneously with citations, so you can compare and contrast quickly.
6. Collections
With rows selected, go to the Collections tab and create a labeled collection (e.g., "Cobb Angle Project"). Reload that selection any time — before a client call, pull up the collection and ask questions across all of its devices at once.
How do you save a set of selected devices for later use?
Select the rows, go to the Collections tab, and create a labeled collection (e.g., "Cobb Angle Project"). You can reload the selection anytime and carry it into the PDF viewer and other tabs that support selections.
7. Product codes and the regulations tree
Click a product code in the results to jump to it in the regulations tree — identification text, sibling product codes, and devices you can open in a PDF viewer on the right. Click a regulation number to see its identification, special controls, and related product codes. You can also search by product code or regulation number at the top of the tree. Always read the special controls if any exist for your device — it broadens your search and sharpens pre-kickoff research.
What can you do from the regulations tree view?
Browse product codes and regulation numbers, read the identification text and special controls, browse sibling product codes, open device PDFs on the right, and search by product code or regulation number at the top of the tree.
8. Chart view
Click Show Chart and segment by regulation number (or product code) to see which regulations dominate your result set. Clicking a regulation takes you into the regulations tree. Great for spotting that most matches are, say, hardware laparoscopic devices — a cue to go back and filter.
How do you see which regulations dominate a search result set?
Click "Show Chart" and segment by Regulation Number. Clicking a regulation takes you to the regulations tree.
9. The predicate graph
Open the Predicates tab for a family-tree view of predicate relationships. Click a node to trace its parents and children; selections from search carry over pre-selected. Commonly predicated devices are worth reading — a lot of people predicated them for a reason. The visual lineage is also handy on client calls, e.g. to show how a predicate family evolved and justify why your predicate still holds.
In the predicate graph, why are commonly predicated devices worth reading?
A lot of people predicated them for a reason. Clicking a node traces parents and children, and selections from search carry over pre-selected.
10. Embeddings: the galaxy map
The Embeddings tab plots every matching document in a 2-D "galaxy map" where semantically similar devices cluster together. Hover or click clusters to explore, and let AI label the clusters for you. Embeddings beat product codes for grouping: two devices can carry different product codes (LLZ vs. QIH) yet do the same thing — the embedding captures the meaning of the intended use and device story. This is also exactly how retrieval-augmented generation (RAG) works under the hood, and it makes a great visual on client calls.
Try it yourself
Head to the search page and work through a few of these AI/ML fuzzy searches to build intuition: perivascular fat on CT · aortic valve calcification opportunistic screening on noncontrast CT · breast cancer prediction on digital pathology slides · autism detection · gestational age prediction · a hearing aid that can also detect a pulse · foundation model based analysis of ECG · large language models · penetration test. Watch how the relevance scores, intended use, and AI Performance tables tell you when results stop being meaningful.