Can also include Factor V Leiden and Prothrombin mutation.
|Tube Type||Purple (EDTA)||Blue x 3 (Citrate)||Gold|
|Reference Range||Antithrombin 3|
Free Protein S (Male)
Free Protein S (Female – except pregnancy, oral contraceptive HRT)
|Availability||NDDH: Batch tested once per month only.|
|Target turnaround time||Batch tested: Up to 1 month.|
|Special requirements & notes||Fresh specimens required. Contact Lab to discuss guidelines for testing.|
|Volume required||1 x Purple, 3 x Blue & 1 x Gold tubes.|
All tubes must be full.
|If delayed transport to lab, store:||Must be received in the laboratory no later than 1 hour after taking the samples.|
|Factors affecting result interpretation||Anticoagulation and pregnancy|
|Time limit for add on test||Add on test not possible|
|‘Lab Tests Online’ link||https://labtestsonline.org.uk/tests/antithrombin|
Last updated: July 16, 2021