Determination of FVIII using a chromogenic method.
Tube
05 (CP) – Citrate
ID
12736
Availability
Weekdays
Additional Information
FVIII activity assays (FVIII:C) are performed to diagnose hemophilia A and to monitor FVIII replacement therapy. FVIII:C assays are typically 1-stage clotting assays. However, there is a subset of mild hemophilia A patients who have shown discrepantly low results when measured with the 2-stage (chromogenic) assay, indicating that testing patients with a mild bleeding history with both a 1- and 2-stage assay would aid in diagnosis.
Send to
Specialist Coagulation
Centre for Laboratory Medicine
St James University Hospital
Beckett Street
Leeds
LS9 7TF
Contact
Collection Con
All citrate tubes filled to line please – 2 citrate samples required.
Samples must be processed within 6 hours of being taken.
Sample REQ
Blood
Ref. Range (Male)
50 to 100
Ref. Range (Female)
50 to 100
Ref. Range (Paed)
50 to 100
Ref. Range Notes
Currently not a diagnostic test
Units
iu/dL
IP Acute TAT
Contact laboratory
IP Routine TAT
14 days
GP Acute TAT
Contact laboratory
GP Routine TAT
14 days