LOINC Code 57761-9: Heparin induced platelet Ab IA Ql

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 Platelet factor 4 heparin complex induced Ab. 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

• Heparin induced platelet Ab [Presence] in Serum or Plasma by Immunoassay
• Platelet factor 4 heparin complex induced Ab
• ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Compx; EIA; ELFA; ELISA; Enzyme immunoassay; Fac; Fact; HAT; Hematology; Heme; Hep; Hepar; Heparin associated thrombycytopenia; Heparin dependent antibodies; Heparin induced thromocytopenia; Heparn; HIT; HITA; IAA; MEIA; Ordinal; PF; PF4; PF4 heparin cmplx; PF4-heparin Ab; PI-factor 4; Pl; Plasma; Platelet Ab.heparin induced; Platelet type heparin inactivator; Platelets; Platelt; Plsm; Plt; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serology; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; SUDS; Thrombocyte; Thrombocytes

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