510(k) · Cleared

Cleared

Ristocetin Platelet Aggrega-Reagent Test

K832929510(k) TraditionalCleared Sep 29, 198336-day reviewClass II21 CFR 864.6675

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026

Sigma Chemical Co. · JBX Aggregrometer, Platelet

Cleared on Sep 29, 1983 after a 36-day review. FDA has not posted a summary or statement for it, so its predicates are not known. 2 later devices descend from it.

Decided: Sep 29, 1983
Review: 36 days
Class: Class II
Product code: JBX
Recalls: None
Predicates: 0

2 later devices descend from it, 1 citing it directly.

This deviceK832929 Ristocetin Platelet Aggrega-Reagent TestSigma Chemical Co. · 1983
Descendant · cites it directly · 1 of its ownK990398 PlateletworksArray Medical, Inc. · 1999
Descendant · 2 generations on · 0 of its ownK023761 Plateletworks, Models PW-a, PW-CHelena Laboratories · 2003

Most influential descendants

Showing 2 of 2 · See all

K990398PlateletworksArray Medical, Inc. · 1999 · cites it directly1descendant
K023761Plateletworks, Models PW-a, PW-CHelena Laboratories · 2003 · 2 generations on0descendants

View FIG. 1 as a table

Line of descent and top descendants

Generation	Number	Device	Applicant	Decided	Recalls
0 (this device)	K832929	Ristocetin Platelet Aggrega-Reagent Test	Sigma Chemical Co.	1983	—
+1	K990398	Plateletworks	Array Medical, Inc.	1999	—
+2	K023761	Plateletworks, Models PW-a, PW-C	Helena Laboratories	2003	—

Descendants by year cleared

Year cleared	Devices	With a Class I recall
1999	1	0
2003	1	0

FIG. 1 — Lineage of K832929, 1983–2003Source: FDA 510(k) summaries, read by 510(k) Report · How lineage is built

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.

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Candidate predicates for a device like this, rankedin the report
Recall history across each candidate’s familyin the report

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What was it cleared against?

FDA has not posted a summary or statement for it, so its predicates are not known.

What descends from it? (2)

1 later device cites it directly; ranked here by how many devices descend from each in turn.

Number	Device	Applicant	Decided	Descendants
K990398	Plateletworks	Array Medical, Inc.	1999	1

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.

What does this lineage say?

Of its descendants, K990398 (Array Medical, Inc., 1999) has gone furthest, with 1 descendant of its own.

How does its category compare?

All JBX devices

JBX Aggregrometer, Platelet: FDA decisions, review times, recalls and adverse event reports over 20 years.

FDA decisions per year · JBX

FDA has decided no JBX device since 2007.

Median 510(k) review, days · JBX

Too few JBX 510(k)s in any year since 2007 to give a median.

Recalls per year · JBX

No recall names JBX since 2007.

Adverse event reports per year · JBX

1in 2016

2007high 1 (2016) · low 0 (2007)2025

MAUDE reports naming product code JBX, not matched to any one device; reports are not rates.

View these four charts as a table

Year	Median 510(k) review, days	MAUDE reports
2007	—	0
2008	—	0
2009	—	0
2010	—	0
2011	—	0
2012	—	0
2013	—	0
2014	—	0
2015	—	0
2016	—	1
2017	—	0
2018	—	0
2019	—	0
2020	—	0
2021	—	0
2022	—	0
2023	—	0
2024	—	0
2025	—	0
2026	—	—

https://510kreport.com/device/K832929 · printed Nov 4, 2026

Cite this page

510(k) Report. “K832929: Ristocetin Platelet Aggrega-Reagent Test.” Lineage record from FDA 510(k) data and the FDA summary. Updated Nov 3, 2026. Accessed Nov 4, 2026. https://510kreport.com/device/K832929

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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