# K903430: Liquichek CK/LD Isoenzyme Control; Levels 1 and 2

- Pathway: 510(k) (Traditional)
- Applicant: Bio-Rad
- Decided: Aug 23, 1990 after 23 days
- Product code: JJT (Enzyme Controls (Assayed And Unassayed))
- Device class: 1
- Regulation: 21 CFR 862.1660
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
11 later devices descend from it; 2 cite it directly.
0 of 12 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
- K981590: Liquichek Urine Toxicology Control Level C1, Liquichek Urine Toxicology Control Level C2, Liquichek Urine Toxicology Con (1998), 8 descendants of its own
- K021384: Liquichek Urine Toxicology Control Levels C1-C4, Models 441,442,443,444 (2002), 2 descendants of its own
- K012999: Triage Tox Drug Screen Controls, Catalog #94001 (2001), 2 descendants of its own
- K050037: Triage Tox Drug Screen Controls (2005), 1 descendant of its own
- K033404: Liquichek Urine Toxicology Control (Confirmatory Series) (2003), 1 descendant of its own

Source page: https://510kreport.com/device/K903430
Methodology: https://510kreport.com/methodology