510(k) · Cleared
Recalled · Class III · 2025Synthafax Aptt Reagent
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Ortho Diagnostic Systems, Inc. · GFO Activated Partial Thromboplastin
Cleared on Apr 23, 1996 after a 134-day review. The FDA summary names its predicate without a number. It has been recalled once.
- Decided
- Apr 23, 1996
- Review
- 134 days
- Class
- Class II
- Product code
- GFO
- Recalls
- 1
- Predicates
- 0
The FDA summary names its predicate without a number.
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.
Planning a device in GFO? 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 GFO device
- #1 K253957 HemosIL Silica Clotting Timescore 11.5 · 4 generations · no Class I recall
- #2 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 |
|---|---|---|---|
| * | — | Activated THROMBOFAX Reagent-Optimized Named without a submission number |
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (0 Class I)
Recalls of this device
| Date | Class | Recall | Root cause | Reason |
|---|---|---|---|---|
| Nov 18, 2025 | Class III | Z-0938-2026 | Process control | Recalled lots were manufactured with double the amount of preservative concentration. |
No ancestor or descendant has a Class I recall.
How does its category compare?
All GFO devicesGFO Activated Partial Thromboplastin: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · GFO
1in 2020
2026 to Oct 25, outlined.
Median 510(k) review, days · GFO
Too few GFO 510(k)s in any year since 2007 to give a median.
Recalls per year · GFO
1in 2025
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · GFO
14in 2025
MAUDE reports naming product code GFO, 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 | 0 | — | 0 | 0 |
| 2008 | 0 | — | 0 | 0 |
| 2009 | 0 | — | 0 | 0 |
| 2010 | 0 | — | 0 | 0 |
| 2011 | 0 | — | 0 | 7 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 0 | — | 1 | 3 |
| 2014 | 0 | — | 0 | 2 |
| 2015 | 0 | — | 0 | 2 |
| 2016 | 1 | — | 0 | 3 |
| 2017 | 0 | — | 0 | 19 |
| 2018 | 0 | — | 2 | 4 |
| 2019 | 0 | — | 0 | 1 |
| 2020 | 1 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 11 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 0 | — | 0 | 3 |
| 2024 | 0 | — | 0 | 2 |
| 2025 | 0 | — | 1 | 14 |
| 2026 | 1 | — | 0 | — |
What is it indicated for?
SynthAFax APTT Reagent is intended for the two-stage activated partial thromboplastin time (APTT) test, specific factor assays, APTT substitution test and monitoring heparin therapy.
Indications for use read by OCR from a scanned FDA summary, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K955638 · printed Nov 6, 2026
Cite this page
510(k) Report. “K955638: Synthafax Aptt Reagent.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 6, 2026. https://510kreport.com/device/K955638
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Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Page last updated Nov 3, 2026