Methodology
Quantitative Immunoturbidimetry
Synonyms
GP1bM; von Willebrand Factor (vWF) Activity
Specimen Type
Plasma
Performing Lab
ARUP
Epic ID
Other Reference Test
Lab Test Days
Daily
Standard TAT
1-3 Days
Collection Information
Specimen Required
(two-three) 1.8 mL or (two) 2.8 mL Blood
Container Type
Sodium Citrate (Blue-Top) Tube
Processing Information - Lab Use Only
Transport Temperature
Frozen-Only
Specimen Stability
Ambient: 4 hours; Refrigerated: Unacceptable; Frozen: 3 months (preferred)
Rejection Criteria
Clotted; hemolyzed, Serum; EDTA Plasma
Test Volume Required
1.5 mL Platelet-Poor Plasma
Minimum Test Volume
1 ml Platelet-Poor Plasma
Processing Instructions
Complete an ARUP requisition and submit with specimens frozen. Send with daily Apollo Courier.
CPT Codes
85397 (not genetic)
Revised
5/9/26
Initials
IM