Test Details

Mnemonic

VWPAR

Ordering Code

3689300

CPT-4 Code(s)

85240, 85245, 85246

Specimen Information

Patient Preparation

Follow coagulation test collection methods in appendices.

Collect

Light blue sodium citrate

Specimen Preparation

Send 3.0 mL plasma in a screw capped plastic vial. CRITICAL FROZEN.

Minimum Volume

1.0 mL

Transport Temperature

Critical frozen

Rejection Criteria

Serum, EDTA plasma, clotted or hemolyzed specimens

Stability

Room temperature: 4 hours
Refrigerated: Unacceptable
Frozen: 3 months

Methodology

Clotting/Platelet Agglutination/Microlatex Particle-Mediated Immunoassay
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Reference Range

See report
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Performing Laboratory

ARUP
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New York DOH Approval Status

Yes
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