510(k) · Cleared
Recalled · 2011Microcoagulation Prothrombin Time Test
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
International Technidyne Corp. · GJS Test, Time, Prothrombin
Cleared on May 18, 1994 after a 107-day review. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known. 1 later device descends from it. It has been recalled 2 times.
- Decided
- May 18, 1994
- Review
- 107 days
- Class
- Class II
- Product code
- GJS
- Recalls
- 2
- Predicates
- 0
1 later device descends from it, 1 citing it directly.
- This deviceK940432 Microcoagulation Prothrombin Time TestInternational Technidyne Corp. · 1994
- Descendant · cites it directly · 0 of its ownK972866 Hemochron JR. Miocrocoagulation Citrated PTInternational Technidyne Corp. · 1998
Most influential descendants
Showing 1 of 1 · See all- K972866Hemochron JR. Miocrocoagulation Citrated PTInternational Technidyne Corp. · 1998 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| 0 (this device) | K940432 | Microcoagulation Prothrombin Time Test | International Technidyne Corp. | 1994 | — |
| +1 | K972866 | Hemochron JR. Miocrocoagulation Citrated PT | International Technidyne Corp. | 1998 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 1998 | 1 | 0 |
Sources: FDA 510(k) database (decision fields), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in GJS? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
Top candidate predicates for a new GJS device
- #1 K243543 microINR Systemscore 13.4 · 6 generations · no Class I recall
- #2 Held for the reportin the report
- #3 Held for the reportin the report
What was it cleared against?
FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.
What descends from it? (1)
1 later device cites it directly; ranked here by how many devices descend from each in turn.
| Number | Device | Decided | Descendants |
|---|---|---|---|
| K972866 | Hemochron JR. Miocrocoagulation Citrated PT | 1998 | 0 |
Has anything in its family been recalled? (0 Class I)
Recalls of this device
| Date | Class | Recall | Root cause | Reason |
|---|---|---|---|---|
| May 10, 2011 | Not classified | Z-2954-2011 | Device Design | Certain lots of Hemochron Jr. PT Cuvettes (J201) and GEM Test PT cartridges demonstrate a higher bias than historically observed when compared to laboratory reference. instruments. |
| May 10, 2011 | Not classified | Z-2953-2011 | Device Design | Certain lots of Hemochron Jr. PT Cuvettes (J201) demonstrate a higher bias than historically observed when compared to laboratory reference instruments. |
No ancestor or descendant has a Class I recall.
What does this lineage say?
- Of its descendants, K972866 (International Technidyne Corp., 1998) has gone furthest, with 0 descendants of its own.
How does its category compare?
All GJS devicesGJS Test, Time, Prothrombin: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · GJS
3in 2025
2026 to Oct 25, outlined.
Median 510(k) review, days · GJS
60in 2025
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · GJS
1in 2022
Class I (5 since 2007) Class II/III not classified
Adverse event reports per year · GJS
105in 2025
MAUDE reports naming product code GJS, not matched to any one device; reports are not rates.
View these four charts as a table
| Year | Decisions | Median 510(k) review, days | Recalls (Class I) | MAUDE reports |
|---|---|---|---|---|
| 2007 | 4 | 77 | 5 | 439 |
| 2008 | 1 | — | 3 | 420 |
| 2009 | 0 | — | 4 | 876 |
| 2010 | 4 | 168 | 2 | 2,177 |
| 2011 | 0 | — | 1 | 2,965 |
| 2012 | 1 | — | 1 | 2,198 |
| 2013 | 1 | — | 1 | 2,584 |
| 2014 | 1 | — | 4 (3) | 2,397 |
| 2015 | 0 | — | 0 | 1,260 |
| 2016 | 1 | — | 0 | 864 |
| 2017 | 1 | — | 5 | 532 |
| 2018 | 2 | — | 3 (2) | 1,958 |
| 2019 | 2 | — | 0 | 2,385 |
| 2020 | 1 | — | 2 | 1,390 |
| 2021 | 0 | — | 1 | 1,359 |
| 2022 | 3 | 399 | 1 | 1,210 |
| 2023 | 2 | — | 0 | 809 |
| 2024 | 1 | — | 0 | 177 |
| 2025 | 3 | 60 | 0 | 105 |
| 2026 | 0 | — | 0 | — |
https://510kreport.com/device/K940432 · printed Nov 4, 2026
Cite this page
510(k) Report. “K940432: Microcoagulation Prothrombin Time Test.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K940432
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Record history
- FDA decision record loaded May 2, 2026
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026