LOINC Code 19178-3: Free beta HCG Qn (Amn fld)

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 Choriogonadotropin.beta subunit.free. It is commonly used with the system or sample type Amnio fld.

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

What it does not mean

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

Key facts

• Choriogonadotropin.beta subunit free [Units/volume] in Amniotic fluid
• Choriogonadotropin.beta subunit.free
• AF; Amn; Amn fl; Amnio; Amniotic flu; Amniotic fluid; Arbitrary Concentration; B; B HCG; Beta HCG; Beta human chorionic gonadotropin; B-HCG; B-HCG Free; CG; Chemistry; Choriogonadotropin beta chain; Choriogonadotropins total; Chorionic gonadotropin; FR; HCG; Human chorionic gonadotropin; Non-protein bound; Point in time; QNT; Quan; Quant; Quantitative; Random; Tumor marker

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