One stage assay for factor IX
Tube
05 (CP) – Citrate
ID
12636
Availability
Weekdays
Additional Information
Uses an APTT based clotting method to perform a one stage assay. Only treatment assays done in Blood Sciences.
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 for multiple factor assays.
Samples must be processed within 6 hours of being taken.
Sample REQ
Blood
Ref. Range (Male)
55 – 150
Ref. Range (Female)
55 – 150
Ref. Range (Paed)
See Comment
Ref. Range Notes
For paediatric reference ranges please refer to BJH Guideline 2002, 119, 295-309, The Investigation and Management of Neonatal Haemostasis and Thrombosis
Critical telephone values: Any abnormal factor assay with clinical details: bleeding. Factor assays less than 10% (unless on a patient known to have a factor deficiency)
Units
iu/dL
IP Acute TAT
Contact laboratory
IP Routine TAT
5 days
GP Acute TAT
Contact laboratory
GP Routine TAT
5 days