49010-2

LOINC Code


LOINC code49010-2
name
descriptionAssay 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
statusACTIVE

Fully-Specified Name

componentPlatelet aggregation
propertyACnc  =  Arbitrary Concentration
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemPRP  =  Platelet rich plasma
scaleQn  =  Quantitative:  The result of the test is a numeric value that relates to a continuous numeric scale. Reported either as an integer, a ratio, a real number, or a range. The test result value may optionally contain a relational operator from the set {<=, <, >, >=}. Valid values for a quantitative test are of the form "7", "-7", "7.4", "-7.4", "7.8912", "0.125", "<10", "<10.15", ">12000", 1-10, 1:256
methodAggregometry.adenosine diphosphate induced

Additional Names

short nameADP; Agg; Agg ADP; 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

Basic Attributes

classCOAG
type1  Laboratory
order vs. observationPA PRP Agg ADP-
example UCUM unitsPRU
The Unified Code for Units of Measure (UCUM) is a code system intended to include all units of measures being contemporarily used in international science, engineering, and business (www.unitsofmeasure.org)

History/Usage

first released
last updated2.83
last change typeMIN  - change to field other than name
change reason[arb'U]/mL

Related Names

N

Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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