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Test Code LAB10069 Aspirin Functional Assay

Important Note

Due to a manufacturer backorder LAB12757 Platelet Inhibition (Plavix) and LAB10069 Aspirin Functional Assay testing is unavailable.

LAB20971 TEG Platelet Mapping provides an alternative for evaluating platelet inhibition and guiding antiplatelet therapy decisions."

Department

HEMATOLOGY

Collection Requirements

Coveanant HealthCare - DO NOT TRANSPORT VIA TUBE SYSTEM

Must draw a discard tube first.
Must be a full draw.
If a CBC is also ordered, collect the CBC last.
If drawing from a catheter, you must draw at least 5.0 mL of waste prior to drawing the Aspirin specimen.

Primary Collection Container

2 Blue 2.0 mL NaCITRATE (Blue White)

Transport

Whole blood ambient

Preferred Transport Temperature

Ambient

Stability

Ambient: 4 hours

Refrigerated: Unacceptable

Frozen: Unacceptable

Minimum Testing Volume

2.0 mL

Reference Range

Less than 550 Aspirin Reaction Units (ARU) indicates platelet dysfunction consistent with aspirin use.

Methodology

Accumetrics VerifyNow Aspirin Assay

Performed

Sunday – Saturday

Reported

As completed

CPT Codes

85576

Unacceptable Conditions

Hemolysis, clotted specimens, refrigerated or frozen specimen.

Failure to assay within 4 hours of collection.