LOINC Code 81629-8: Gamma hydroxybutyrate Confirm Ql (Specimen)

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Gamma hydroxybutyrate. It is commonly used with the system or sample type XXX.

When is it used?

• Used in lab systems, EHRs, and clinical data exchange.
• May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
• Status: ACTIVE
• Order vs observation: Both
• Method: Confirm

What it does not mean

• The code identifies the observation or test, not the actual result.

Key facts

• Gamma hydroxybutyrate [Presence] in Specimen by Confirmatory method
• Gamma hydroxybutyrate
• Confirmatory results for gamma hydroxybutyrate (GHB) in various specimens, including serum, plasma, whole blood and urine.
• 4-hydroxybutyrate; 4-hydroxybutyric acid; Cfm; CNFR; CNFRM; Conf; Confirmation; Confirmatory; DRUG/TOXICOLOGY; Drugs; Gamma hydroxy butyrate; Gamma-hydroxybutyrate; Gamma-OH; GBH; GCMS; Georgia home boy; GHb; G-OH-Butyr; Goop; Hydroxybutyric acid; LC/MS/MS; Liquidx; Misc; Miscellaneous; Ordinal; Other; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Spec; To be specified in another part of the message; Unspecified

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Frequently asked questions