# K832929: Ristocetin Platelet Aggrega-Reagent Test

- Pathway: 510(k) (Traditional)
- Applicant: Sigma Chemical Co.
- Decided: Sep 29, 1983 after 36 days
- Product code: JBX (Aggregrometer, Platelet)
- Device class: 2
- Regulation: 21 CFR 864.6675
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
2 later devices descend from it; 1 cites it directly.
0 of 3 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA has not posted a summary or statement for it, so its predicates are not known.

## Most influential descendants
- K990398: Plateletworks (1999), 1 descendant of its own
- K023761: Plateletworks, Models PW-a, PW-C (2003), 0 descendants of its own

Source page: https://510kreport.com/device/K832929
Methodology: https://510kreport.com/methodology