One stage factor assay for Refacto FVIII.
Tube
05 (CP) – Citrate
ID
12676
Availability
Daily (available 24/7)
Additional information
Uses an APTT based clotting method to perform a one stage factor assay against a Refacto standard rather than human FVIII. Treatment assays done in Blood Sciences, out of hours.
Send to
Specialist Coagulation
Centre for Laboratory Medicine
St James University Hospital
Beckett Street
Leeds
LS9 7TF
Contact
Collection Con
Correctly filled citrate tubes. 1 for single factor assay, 2 if associated inhibitor investigations are also required.
Samples must be processed within 6 hours of being taken.
Sample REQ
Blood
Ref. Range Notes
Please note this test is NOT reported against a Normal range as it is used to monitor treatment only, not as a diagnostic test
Critical telephone values: Not a diagnostic test
Units
iu/dL
IP Acute TAT
Contact laboratory
IP Routine TAT
5 days
GP Acute TAT
Contact laboratory
GP Routine TAT
5 days