Factor XI Assay
One stage assay for factor XI
| Tube | 05 (CP) - Citrate |
|---|---|
| ID | 12717 |
| Availability | Daily (available 24/7) |
| 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 Chancellor / Lincoln Wing Link Corridor Pathology Block 32 St James University Hospital Beckett Street Leeds LS9 7TF |
| Contact | https://www.leedsth.nhs.uk/a-z-of-services/pathology-2/specialist-laboratory-medicine-slm/specialist-coagulation/?stage=Stage |
| 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) | 60 - 150 |
| Ref. Range (Female) | 60 - 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 assys 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 |
| Telepath | F11J |
| ICE Codes | LF11 |
