Test directory: Von Willebrand Panel

Ordering Code4396
Test NameVon Willebrand Panel
AliasvWD Panel
Profile Contains
Preferred SpecimenPlasma, Citrate, 3.2%
Preferred Container2 B (Citrate - Blue Top)
Optimum Volume5 mL
Collection InstructionsFasting specimen preferred, but not required. Draw 4 full Citrate tubes. Mix tubes well.
Handling InstructionsDouble centrifuge plasma. Separate and freeze immediately at -20 deg C. Do NOT thaw once specimen is frozen.
Transport RequirementsOahu: Frozen
Airline: Frozen
Specimen StabilityAmbient: 4 Hours, Whole Blood (unopened tube) or Plasma
Frozen: 2 Weeks Plasma
Avail. StatNO
Analytic Time7 Days
Reference Lab Quest Diagnostic Lab-NI

Reference range(s) for Ristocetin Cofactor

The reference ranges listed below are valid on this date of March 31, 2025.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Factor VIII AssayALL50-20050-200%

Reference range(s) for Ristocetin Cofactor

The reference ranges listed below are valid on this date of March 31, 2025.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
Ristocetin CofactorALLSee report.

Reference range(s) for Ristocetin Cofactor

The reference ranges listed below are valid on this date of March 31, 2025.
ComponentAgeMale NormMale Critical LowMale Critical HighFemale NormFemale Critical HighFemale Critical LowUnitsAdd'l info
von Willebrand Factor AntigenALL50-16050-160%