# K923386: THC Urine Calibrators

- Pathway: 510(k) (Traditional)
- Applicant: Diagnostic Reagents, Inc.
- Decided: Sep 14, 1992 after 75 days
- Product code: DLJ (Calibrators, Drug Specific)
- Device class: 2
- Regulation: 21 CFR 862.3200
- Recalls of this device: none
- Data: FDA decisions to Oct 25, 2026; recalls to Oct 12, 2026

## Lineage
No predicates in its family tree.
6 later devices descend from it; 1 cites it directly.
0 of 7 devices in its family (counting itself) have a Class I recall.

## Predicates on the family tree (from the FDA summary)
- None. FDA lists a 510(k) statement for it but has not posted the file, so its predicates are not known.

## Most influential descendants
- K021449: Cannabinoid Urine Drugs of Abuse Calibrators and Controls (2002), 5 descendants of its own
- K110239: Lzi Cannabinoids (CTHC) Homogeneous Enzyme Immunoassay, Calibrators, Control (2011), 4 descendants of its own
- K141320: LZI Oral Fluid Cannabinoids Enzyme Immunoassay, LZI Oral Fluid Cannabinoids Calibrators and LZI Oral Fluid Cannabinoids Controls (2015), 2 descendants of its own
- K223162: Healgen® Accurate Oral Fluid Drug Test, Healgen® Accurate Oral Fluid Drug Test COT (2023), 1 descendant of its own
- K252523: Healgen® Accurate Oral Fluid Drug Test COT/THC; Healgen® Accurate Oral Fluid Drug Test (2026), 0 descendants of its own

Source page: https://510kreport.com/device/K923386
Methodology: https://510kreport.com/methodology