New Test
Effective Date
02/10/2026
Included in Report
Updated Test
New Test
Test Details
Mnemonic
VWFP
Ordering Code
3600557
CPT-4 Codes(s)
85240, 85246, 85397
Turnaround Time
3 - 5 days
Performed
Monday - Saturday
Legacy Code
VWFP
Example Report
Specimen Information
Patient Preparation
Collect using coagulation test collection methods.
Collect
Light blue sodium citrate
Specimen Preparation
Send 3.0 mL platelet-poor plasma in a screw capped plastic vial. CRITICAL FROZEN. Separate specimens must be submitted when multiple tests are ordered.
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
Electromagnetic Mechanical Clot Detection/Microlatex Particle-Mediated Immunoassay/Quantitative Immunoturbidimetry
Reference Range
See report
Performing Laboratory
ARUP
New York DOH Approval Status
Yes