LOINC Code 83127-1: Free T3 IA [Mass/Vol]

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 Triiodothyronine.free. It is commonly used with the system or sample type Ser/Plas.

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: IA

What it does not mean

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

Key facts

• Triiodothyronine (T3) Free [Mass/volume] in Serum or Plasma by Immunoassay
• Triiodothyronine.free
• This term was created for, but is not limited in use to, bioMerieux's VIDAS FT3 assay, which is intended for the quantitative measurement of free triiodothyronine (FT3) in human serum or plasma.
• Chemistry; EIA; ELFA; ELISA; Endocrine; Endocrinology; Enzyme immunoassay; FR; Free T3; FT3; IAA; Level; Mass concentration; MEIA; Non-protein bound; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; SUDS; T3; T-3; T3Free; thyroid hormone; Total T3; Triodothyrne

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