510(k) · Cleared
ClearedPT S Test Strips and Controls for the Coaguchek S System, Models 2032422 and 3271404
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Roche Diagnostics Corp. · GJS Test, Time, Prothrombin
Cleared on Oct 24, 2002 as substantially equivalent to K010599 (International Technidyne Corp., 2001) after a 224-day review. Its family tree reaches back 1 generation to 2001. 4 of the 20 devices in its family, counting itself, have a Class I recall. 18 later devices descend from it.
- Decided
- Oct 24, 2002
- Review
- 224 days
- Class
- Class II
- Product code
- GJS
- Recalls
- None
- Predicates
- 1
Its longest line of descent runs back 1 generation to K010599 (2001). 18 later devices descend from it, 2 citing it directly. 4 of the 20 devices in this family, counting this one, have a Class I recall.
- Root · 1 generation backK010599 Protime Microcoagulation System / Protime 3 CuvetteInternational Technidyne Corp. · 2001 · Recalled
- This deviceK020831 PT S Test Strips and Controls for the Coaguchek S System, Models…Roche Diagnostics Corp. · 2002
- Descendant · cites it directly · 16 of its ownK060978 Coaguchek XS SystemRoche Diagnostics · 2006 · Recalled
- Descendant · 2 generations on · 6 of its ownK071041 Coaguchek XS Plus SystemRoche Diagnostics · 2007 · Recalled (Class I)
- Descendant · 2 generations on · 4 of its ownK180780 microINR SystemIline Microsystems, S.L. · 2019
- Descendant · 3 generations on · 3 of its ownK201185 microINR SystemIline Microsystems, S.L. · 2020
- Descendant · 4 generations on · 2 of its ownK231711 microINR SystemIline Microsystems, S.L. · 2023
Showing 5 of 18 descendants. See all descendants
Descendants cleared per year
Class I recalls in this family
Most influential descendants
Showing 5 of 18 · See all- K060978Coaguchek XS SystemRoche Diagnostics · 2006 · cites it directly16descendants
- K071041Coaguchek XS Plus SystemRoche Diagnostics · 2007 · 2 generations on6descendants
- K180780microINR SystemIline Microsystems, S.L. · 2019 · 2 generations on4descendants
- K201185microINR SystemIline Microsystems, S.L. · 2020 · 3 generations on3descendants
- K231711microINR SystemIline Microsystems, S.L. · 2023 · 4 generations on2descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K010599 | Protime Microcoagulation System / Protime 3 Cuvette | International Technidyne Corp. | 2001 | 3 |
| 0 (this device) | K020831 | PT S Test Strips and Controls for the Coaguchek S System, Models 2032422 and… | Roche Diagnostics Corp. | 2002 | — |
| +1 | K060978 | Coaguchek XS System | Roche Diagnostics | 2006 | 3 |
| +2 | K071041 | Coaguchek XS Plus System | Roche Diagnostics | 2007 | Class I |
| +2 | K180780 | microINR System | Iline Microsystems, S.L. | 2019 | — |
| +3 | K201185 | microINR System | Iline Microsystems, S.L. | 2020 | — |
| +4 | K231711 | microINR System | Iline Microsystems, S.L. | 2023 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2006 | 1 | 0 |
| 2007 | 3 | 1 |
| 2010 | 2 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2023 | 2 | 0 |
| 2024 | 1 | 0 |
| 2025 | 3 | 0 |
Sources: FDA 510(k) database (decision fields), the FDA summary (predicates and indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
4 devices in this family have a Class I recall. 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? (1)
Devices the submitter claimed this one is substantially equivalent to (*), and reference devices cited for a specific test or feature (†), as written in the FDA summary.
| Type | Number | Device | Decided |
|---|---|---|---|
| * | K010599 | Protime Microcoagulation System / Protime 3 CuvetteSummary page 3…te following items: device Topic ProTime Microcoagulation System PT-S Test Strips For Use With (K010599) CoaguChek S System As Indicated in the ProTime Device Insert ~~… | 2001 |
What descends from it? (18)
See all 182 later devices cite it directly; ranked here by how many devices descend from each in turn.
Has anything in its family been recalled? (4 Class I)
No FDA recall names this device.
Relatives with a Class I recall
Class I is FDA’s most serious recall class. A recall in the family tree is context for this device, not evidence about it.
- K071041Coaguchek XS Plus SystemRoche Diagnostics · 2007 · 2 generations on · ◆ in the 2007 descendants bar of FIG. 11 Class I recall
- K170960CoaguChek Vantus SystemRoche Diagnostics · 2017 · 3 generations on · ◆ in the 2017 descendants bar of FIG. 11 Class I recall
- K180684CoaguChek XS Plus SystemRoche Diagnostics · 2018 · 3 generations on · ◆ in the 2018 descendants bar of FIG. 11 Class I recall
- K093460Coaguchek XS Pro SystemRoche Diagnostics · 2010 · 3 generations on · ◆ in the 2010 descendants bar of FIG. 11 Class I recall
What does this lineage say?
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 | — |
What is it indicated for?
The Coaguchek S System is intended for quantitative Prothornbin Time (PT)testing for monitoring of warfarin therapy, using fresh capillary or non-anticoagulated venous whole blood by professional health care providers.
Indications for use as stated in the FDA summary.
https://510kreport.com/device/K020831 · printed Nov 6, 2026
Cite this page
510(k) Report. “K020831: PT S Test Strips and Controls for the Coaguchek S System, Models 2032422 and 3271404.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K020831
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Lineage and recalls computed Nov 3, 2026
- Page last updated Nov 3, 2026