LOINC Code 103639-1: 4-hydroxy Xylazine Confirm Ql (U)

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 4-hydroxy Xylazine. It is commonly used with the system or sample type Urine.

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

• 4-hydroxy Xylazine [Presence] in Urine by Confirmatory method
• 4-hydroxy Xylazine
• 4-[(5,6-Dihydro-4H-1,3-thiazin-2-yl)amino]-3; 4OH-Xylazine; 5-dimethylphenol; p-Hydroxyxylazine; Cfm; CNFR; CNFRM; Conf; Confirmation; Confirmatory; DRUG/TOXICOLOGY; Drugs; GCMS; Hydrox; LC/MS/MS; OH; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Tranq; UA; UR; Urn

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