Specimen Requirements

Title

VON WILLEBRAND PANEL

Specimen Requirement

Includes: Factor VIII Antigen, Factor VIII Activity, Von Willebrand Factor Activity (Ristocetin Cofactor).

Draw blood in two light blue sodium citrate tubes. See coagulation test collection instructions. Send 1.5 mL min plasma frozen in a screw-capped plastic vial. Indicate “plasma/lt blue” on vial. Contact Lab for dry ice for shipment.

Methodology

Stability

Frozen 3 months

Reference Range

By Report*

Turnaround

3-5 days Performed Mon-Sat

Clinical Use

Test Code

VWPW