- Anti-Xa for LMWH monitoring
- alpha 2 antiplasmin activity
- Prothrombin fragment 1:2
- Factor XIII
- Fibrinogen Ag
- TAFI antigen
All results are available within two weeks although anti-Xa estimations can be performed urgently.
External users may contact the laboratory for information related to result progress.
Requests for these assays and urgent anti-Xa levels must be discussed with a consultant of the Centre for Haemostasis and Thrombosis.
Citrate (blue top tube)
Anti-Xa samples must be taken to the laboratory on ice, please contact laboratory for details of phlebotomy and delivery. Each test requires one 4.5ml citrated sample.
FXIII requests also require a special Lithium Heparin tube from Clinical Biochemistry for an ammonia level to be performed.
Please call 020 7188 2797, Monday to Friday, 9am-5.15pm.