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
Refrigerated: Unacceptable
Frozen: 3 months
Methodology
Clotting/Platelet Agglutination/Microlatex Particle-Mediated Immunoassay
Reference Range
See report
Performing Laboratory
ARUP Reference Laboratory
New York DOH Approval Status
Yes