LOINC Code 49010-2: Platelet aggregation Qn (PRP)

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 PRP.

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.adenosine diphosphate induced

What it does not mean

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

Key facts

• Platelet aggregation [Units/volume] in Platelet rich plasma by ADP induced
• Platelet aggregation
• Assay is used to measure platelet P2Y12 receptor blockade known to occur with some drugs including the thienopyridine class of drugs, including clopidogrel (Plavis(r)). VerifyNow P2Y12 Assay from Accumetrics uses adenosine-5-diphosphate(ADP/PGE1) to induce platelet activation. Activated platelets bind fibrinogen in proportion to the number of expressed platelet GPIIb/IIIa receptors. Light transmittance increases as activated platelets bind and aggregate the fibrinogen-coated beads. A turbidimetric based optical detection system measures change in optical signal caused by aggregation and reports results in P2Y12 Reaction Units(PRU). Information from VerifyNow P2Y12 Assay package insert from Accumetrics dated 2006 09 01
• ADP; Agg; Aggr; ANED; Arbitrary concentration; COAGULATION; Hematology; Heme; Medication stress; PA; Pl; Platelet rich plasma; Platelets; Platelt; Plt; Point in time; QNT; Quan; Quant; Quantitative; Random; 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