# K900484: Ret-Check

- Pathway: 510(k) (Traditional)
- Applicant: Streck Laboratories, Inc.
- Decided: Mar 9, 1990 after 36 days
- Product code: GJR (Control, Red-Cell)
- Device class: 2
- Regulation: 21 CFR 864.8625
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
8 later devices descend from it; 1 cites it directly.
0 of 9 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
- K961054: Sysmex UF-100 (1996), 7 descendants of its own
- K070910: Sysmex Model UF1000I (2007), 6 descendants of its own
- K080887: Sysmex UF-1000I, Automated Urine Particle Analyzer with Urinalysis Wam Software (2008), 3 descendants of its own
- K131444: UA-Cellular Complete (2014), 1 descendant of its own
- K171883: Sysmex  UF-5000 Fully Automated Urine Particle Analyzer (2018), 0 descendants of its own

Source page: https://510kreport.com/device/K900484
Methodology: https://510kreport.com/methodology