LOINC Code 78685-5: Platelet aggregation Qn (Bld)

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 aggregation. It is commonly used with the system or sample type Bld.

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: Aggregometry.collagen induced

What it does not mean

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

Key facts

• Platelet aggregation [Units/volume] in Blood by collagen induced
• Platelet aggregation
• Assay for the quantitative in vitro determination of platelet function triggered by collagen. This term was created for, but not limited in use to, the Cobas COLtest, a collagen induced platelet aggregation assay on whole blood samples by impedance aggregometry method.
• Agg; Aggr; Arbitrary concentration; Blood; COAGULATION; Hematology; Heme; PA; Pl; Platelets; Platelt; Plt; Point in time; QNT; Quan; Quant; Quantitative; Random; Thrombocyte; Thrombocytes; WB; Whole blood

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