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
Chancellor / Lincoln Wing Link Corridor
Pathology
Block 32
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