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.
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Collect

Light blue sodium citrate
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Specimen Preparation

Send 3.0 mL plasma frozen in a screw-capped plastic vial. CRITICAL FROZEN.
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Minimum Volume

1.0 mL
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Transport Temperature

Critical frozen
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Rejection Criteria

Serum, EDTA plasma, clotted or hemolyzed specimens
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Stability

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

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

See report
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Performing Laboratory

ARUP Reference Laboratory
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New York DOH Approval Status

Yes
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