510(k) · Cleared
ClearedN-Assay Tia Antithrombin Iii Test Kit
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
Crestat Diagnostics, Inc. · DDQ Antigen, Antiserum, Control, Antithrombin Iii
Cleared on Oct 20, 1997 after a 125-day review. FDA’s file for it is a 510(k) statement, which names no predicate.
- Decided
- Oct 20, 1997
- Review
- 125 days
- Class
- Class II
- Product code
- DDQ
- Recalls
- None
- Predicates
- 0
FDA’s file for it is a 510(k) statement, which names no predicate.
Sources: FDA 510(k) database (decision fields), the FDA 510(k) statement (indications), FDA recall and enforcement reports, and MAUDE; processed by 510(k) Report. Verify on FDA.gov · Methodology and accuracy.
Planning a device in DDQ? A 510(k) Report weighs predicate choices, recall history and review times for a new device like this one.
- Candidate predicates for a device like this, rankedin the report
- Recall history across each candidate’s familyin the report
What was it cleared against?
FDA’s file for it is a 510(k) statement, which names no predicate.
What descends from it?
No later submission names this one as a predicate yet.
Has anything in its family been recalled? (0 Class I)
No FDA recall names this device.
No ancestor or descendant has a Class I recall.
How does its category compare?
All DDQ devicesDDQ Antigen, Antiserum, Control, Antithrombin Iii: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · DDQ
FDA has decided no DDQ device since 2007.
Median 510(k) review, days · DDQ
Too few DDQ 510(k)s in any year since 2007 to give a median.
Recalls per year · DDQ
No recall names DDQ since 2007.
Adverse event reports per year · DDQ
No MAUDE report names DDQ since 2007.
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 | 0 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 0 | — | 0 | 0 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 0 | — | 0 | 0 |
| 2016 | 0 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 0 |
| 2018 | 0 | — | 0 | 0 |
| 2019 | 0 | — | 0 | 0 |
| 2020 | 0 | — | 0 | 0 |
| 2021 | 0 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 0 | — | 0 | 0 |
| 2024 | 0 | — | 0 | 0 |
| 2025 | 0 | — | 0 | 0 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
The intended use for the N-Assay TIA Antithrombin III Test Kit is for the quantification of human antithrombin III in human plasma.
AT-III levels less than 60% of normal are associated with increased risk of thromboembolism.
The assay of plasma AT-III is also helpful in monitoring heparin therapy.
Indications for use read by OCR from a scanned FDA 510(k) statement, so letters may be misread. Check the PDF before quoting it.
https://510kreport.com/device/K972257 · printed Nov 5, 2026
Cite this page
510(k) Report. “K972257: N-Assay Tia Antithrombin Iii Test Kit.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 5, 2026. https://510kreport.com/device/K972257
Report an extraction error
Are you the manufacturer?
Record history
- FDA decision record loaded May 2, 2026
- Summary read Oct 13, 2026 (extraction version 9eaa42aa01ed)
- Page last updated Nov 3, 2026