49011-0
LOINC Code
| LOINC code | 49011-0 | |
|---|---|---|
| name | ||
| description | A whole blood assay for detecting platelet inhibition or dysfunction due to aspirin therapy. This in vitro assay uses citrated whole blood in the point of care or laboratory setting. Not for use in patients with underlying congenital platelet abnormalities, patients with non-aspirin induced acquired platelet abnormalities or in patients receiving non-aspirin platelet agents (may be used in patients treated with COX-2 inhibitors, e.g., (Celebrex(r))). The VerifyNow assay incorporates the agonist arachidonic acid to activate platelets, and measures platelet function based upon the ability of activated platelets to bind fibrinogen. Fibrinogen-coated microparticles aggregate in whole blood in proportion to the number of unblocked platelets GP IIb/IIIa receptors. Light transmittance increases in as activated platelets bind and aggregate fibrinogen-coated beads. The instrument measures this change in optical signal caused by aggregation. Information from VerifyNow Aspirin Assay package insert from www.Accumetrics.com accessed 2090618. | |
| status | ACTIVE | |
Fully-Specified Name | ||
| component | Platelet aggregation | |
| property | ACnc = Arbitrary Concentration | |
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | |
| system | PRP = Platelet rich plasma | |
| scale | Qn = 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 | |
| method | Aggregometry.arachidonate induced | |
Additional Names | ||
| short name | AA; AA ind; Agg; Aggr; Arbitrary concentration; COAGULATION; Hematology; Heme; PA; Pl; Platelet rich plasma; Platelets; Platelt; Plt; Point in time; QNT; Quan; Quant; Quantitative; Random; Thrombocyte; Thrombocytes | |
Basic Attributes | ||
| class | COAG | |
| type | 1 Laboratory | |
| order vs. observation | PA PRP AA-aCnc | |
| example UCUM units | ARU 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 updated | 2.82 | |
| last change type | NAM - change to Analyte/Component | |
| change reason | [arb'U]/mL | |
Related Names | ||
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