LOINC Code 55892-4: Hypoxanthine phosphoribosyltransferase/Adenine phosphoribosyltransferase (Amn fld cells) [Catalytic ratio]

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 Hypoxanthine phosphoribosyltransferase/Adenine phosphoribosyltransferase. It is commonly used with the system or sample type Amnio fld cells.

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: Observation

What it does not mean

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

Key facts

• Hypoxanthine phosphoribosyltransferase/Adenine phosphoribosyltransferase [Enzymatic activity ratio] in Amniotic fluid cells
• Hypoxanthine phosphoribosyltransferase/Adenine phosphoribosyltransferase
• Adenine transaminase; AF; Amn; Amn fl; Amnc; Amnio; Amniotic flu; Amniotic fluid; Amniotic fluid cells; APRT; B4 Hemosan; Catalytic Concentration Ratio; Catalytic Ratio; CCrto; Chemistry; Enzymatic activity ratio; HGPRT; HPRT; hypoxanthine-guanine phosphoribosyltransferase; Leuco-4; Point in time; QNT; Quan; Quant; Quantitative; Random; Vit B4; Vitamin B4

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