LOINC Code 5890-9: Protein S+Acarboxy Free Ag IA Qn (PPP)

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 Protein S+Acarboxy.free Ag. It is commonly used with the system or sample type PPP.

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

• Protein S+Acarboxy Free Ag [Units/volume] in Platelet poor plasma by Immunoassay
• Protein S+Acarboxy.free Ag
• Antigen; Antigens; Arbitrary concentration; CHEMISTRY.CHALLENGE TESTING; EIA; ELFA; ELISA; Enzyme immunoassay; FR; IAA; MEIA; Non-protein bound; Plas; Platelet poor plasma; Point in time; PR; Prot; Prot S; Prot S+ACA; Prot S+ACA Free; PS; QNT; Quan; Quant; Quantitative; Random; S prime; SUDS

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