# Keystone Diagnostics, Inc.

- Location (FDA's records): Washington, DC
- FDA decisions: 2 (1987–1988): 2 510(k) clearances
- Product codes: LDJ (2)
- Predicates its devices cite: 0 (0 its own); citations of its devices by later devices: 0 (0 its own)
- Recalls linked to its devices: 0 (0 Class I)
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Recent decisions
- K875219: Modification to Kdi Quik Test Marijuana Screen (Jun 24, 1988)
- K870197: Kdi Quik Test (TM) Marijuana Screen (Jun 1, 1987)

Source page: https://510kreport.com/company/keystone-diagnostics