Von Willebrands Screen

Test Information

Test Name

Von Willebrands Screen


VWD Screen; Collagen Binding Assay; Factor VIII Related Antigen; VWF; VWS; VWD; DAVVP challenge



Price Disclaimer

Many services are free for eligible patients. A minimum charge may apply. Prices listed are for unfunded, individual, requests. Please contact us for commercial testing.

Preferred Specimen

Citrates x 4 & EDTA (Whole blood)

Testing Location


Turn Around Time

1 week


View bleeding-questionnaire

Collection Information


  • Complete Coagulation (Bleeding) questionnaire except for inpatients, or specific requests by a Haematologist
  • Must reach lab within 7 hours of collection, collect close to Courier time if necessary

Processing Information

Registration Code

VWS (Processing Query)


  • Use "Processing Query" to Haematology to confirm test(s) required
  • 3x citrates double spun and freeze within 8 hours of collection, referral to Waikato Hospital Laboratory for VW Screening
  • VWS includes: Factor VIII, Collagen Binding CBA, Factor VIII related antigen vWF:Ag, Ristocetin Cofactor (Ricof)
  • 1x citrate & 1x EDTA, process inhouse for CBC and Coagulation Screen
  • If PFA required as confirmed by Haematology, refer to PFA for specimen requirement



View Interpretations

External Referral Information

Referral Location

Waikato Hospital Laboratory

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