510(k) · Cleared
Recalled · Class II · 2013Sta - Liatest VWF Test Kit
Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly
American Bioproducts Co. · GJT Plasma, Coagulation Factor Deficient
Cleared on Oct 25, 1996 as substantially equivalent to K861417 (American Bioproducts Co., 1986) after a 108-day review. Its family tree reaches back 1 generation to 1986. 1 later device descends from it. It has been recalled once.
- Decided
- Oct 25, 1996
- Review
- 108 days
- Class
- Class II
- Product code
- GJT
- Recalls
- 1
- Predicates
- 1
Its longest line of descent runs back 1 generation to K861417 (1986). 1 later device descends from it, 1 citing it directly.
Most influential descendants
Showing 1 of 1 · See all- K220728vWF AgSiemens Healthcare Diagnostics Products GmbH · 2023 · cites it directly0descendants
View FIG. 1 as a table
Line of descent and top descendants
| Generation | Number | Device | Applicant | Decided | Recalls |
|---|---|---|---|---|---|
| −1 | K861417 | Assera-Plate VWF Kit | American Bioproducts Co. | 1986 | — |
| 0 (this device) | K962675 | Sta - Liatest VWF Test Kit | American Bioproducts Co. | 1996 | — |
| +1 | K220728 | vWF Ag | Siemens Healthcare Diagnostics Products GmbH | 2023 | — |
Descendants by year cleared
| Year cleared | Devices | With a Class I recall |
|---|---|---|
| 2023 | 1 | 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.
Planning a device in GJT? 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 GJT device
- #1 K222831 CRYOcheck Factor VIII Deficient Plasma with VWFscore 6.6 · 3 generations · no Class I recall
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 |
|---|---|---|---|
| * | K861417 | Assera-Plate VWF KitSummary page 1…alyzer. The proposed STA®-Liatest® VWF test kit has demonstrated substantial equivalence to the commercially available ASSERA®-PLATE vWF kit (Diagnostica Stago, France; K861417) which is an electro-immunodiffusion procedure for the quantitative determination of vWF antigen levels in citrated plasma. | 1986 |
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 |
|---|---|---|---|
| K220728 | vWF Ag | 2023 | 0 |
Has anything in its family been recalled? (0 Class I)
Recalls of this device
| Date | Class | Recall | Root cause | Reason |
|---|---|---|---|---|
| Jan 28, 2013 | Class II | Z-0951-2013 | Software design (manufacturing process) | Diagnostica Stago has confirmed that sometimes the delta OD measured can be changed leading to a lowered percentage result. |
No ancestor or descendant has a Class I recall.
What does this lineage say?
- Its one ancestor has no recall.
- Of its descendants, K220728 (Siemens Healthcare Diagnostics Products GmbH, 2023) has gone furthest, with 0 descendants of its own.
How does its category compare?
All GJT devicesGJT Plasma, Coagulation Factor Deficient: FDA decisions, review times, recalls and adverse event reports over 20 years.
FDA decisions per year · GJT
1in 2023
2026 to Oct 25, outlined.
Median 510(k) review, days · GJT
444in 2011
Receipt to decision; years with fewer than 3 clearances left blank.
Recalls per year · GJT
1in 2013
Class I (0 since 2007) Class II/III not classified
Adverse event reports per year · GJT
1in 2025
MAUDE reports naming product code GJT, 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 | 3 | 444 | 0 | 0 |
| 2012 | 0 | — | 0 | 0 |
| 2013 | 0 | — | 1 | 3 |
| 2014 | 0 | — | 0 | 0 |
| 2015 | 0 | — | 0 | 0 |
| 2016 | 0 | — | 0 | 0 |
| 2017 | 0 | — | 0 | 1 |
| 2018 | 1 | — | 0 | 6 |
| 2019 | 0 | — | 0 | 0 |
| 2020 | 0 | — | 0 | 1 |
| 2021 | 0 | — | 0 | 0 |
| 2022 | 0 | — | 0 | 0 |
| 2023 | 1 | — | 0 | 0 |
| 2024 | 0 | — | 0 | 2 |
| 2025 | 0 | — | 0 | 1 |
| 2026 | 0 | — | 0 | — |
What is it indicated for?
The STA®-Liatest® vWF test kit is intended for use with the STA® analyzer to perform quantitative assays of von Willebrand Factor (vWF) antigen in citrated plasma by the immuno-turbidimetric method based on the measurement of light absorbance produced by a suspension of microlatex particles coated with specific anti-vWF antibodies.
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/K962675 · printed Nov 4, 2026
Cite this page
510(k) Report. “K962675: Sta - Liatest VWF Test Kit.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K962675
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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