The Collagen Binding assay [VWF:CB] measures the binding of von Willebrands factor and measures preferentially the high molecular weight (HMW) multimers of VWF. This makes the test useful in distinguishing between type 1 and type 2 von Willebrands disease.
Tube
05 (CP) – Citrate
Availability
24/7
Additional information
The test is performed at the Royal Hallamshire Hospital Haemostasis lab, Sheffield.
PLEASE NOTE from October 2025 this test will be replaced by the collagen binding assay performed by an Acustar analyser.
Turnaround Time
5 weeks
Send to
Specialist Coagulation
Centre for Laboratory Medicine
St James University Hospital
Beckett Street
Leeds
LS9 7TF
Contact
Collection Con
Citrated plasma. Must be processed or plasma frozen within 6 hours of collection.
Sample Storage
2 Citrate tubes filled to line please.
Samples must be processed within 6 hours of being taken.
Sample REQ
Blood
Ref. Range (Male)
50.5-181.2
Ref. Range (Female)
50.5-181.2
Ref. Range (Paed)
50.5 – 181.2. Please note that these are adult reference ranges and may not apply to patients <12 months old. Interpretation of results must always be done in light of the clinical setting.
Units
IU/dL
IP Acute TAT
2 hours
IP Routine TAT
5 weeks