Laboratory Medicine
Test Directory / Coagulation factor XII assay
Coagulation factor XII assay
Citrated Plasma
| Test | Coagulation factor XII assay |
|---|---|
| Common Abbreviations | FXII |
| Profile | Coagulation Screen added on the same sample |
| Clinical Indication | To determine if the coagulation factor XII is low or absent. Associated with reduced clot formation and bleeding. Contact Consultant Haematologist for advice. |
| Specimen Type | Blood |
| Sample Type | Citrated Plasma |
| Minimum Volume | 2 x 3 mL (adult) 2 x 1 mL (paed) (citrated plasma must be filled to bottle line) |
| Special Precautions | Must state if patient is on anticoagulants (DOAC, Warfarin, Heparin); known coagulation disorders; clincal symptoms (bleeding, bruising). |
| Stability | 4-6 hours |
| Turnaround Time | 4 hours (urgent) if requested via the haematology consultants. 3 weeks (routine) |
| Laboratory | York Hospital |
| Reference Interval | Reference range printed on final report. |
| Limitations | Haemolysis, gross lipaemia, high haematocrit may interfere with measurement. Over or under filled samples cannot be used due to ratio between blood and citrate |
| Additional Information |
