Antithrombin testing is primarily ordered, along with other tests for excessive clotting disorders, to investigate the cause of recurrent blood clot formation (thrombosis). Testing evaluates the activity (function) and the amount (quantity) of antithrombin and helps identify antithrombin deficiency.The activity test is performed first, to evaluate whether the total amount of functional antithrombin is normal. If the antithrombin activity is low, then the antithrombin antigen test is performed to determine the quantity of antithrombin present. These two tests can be used to differentiate between type 1 and type 2 antithrombin deficiencies. If a deficiency is detected, both antithrombin tests are typically repeated at a later date to confirm test findings.Antithrombin testing may sometimes be used to evaluate people who are not responding as expected to heparin. Heparin is an anticoagulant drug that is given to people who have a blood clot or are at an increased risk of forming inappropriate blood clots. The effects of heparin are mediated by antithrombin. Heparin can greatly increase antithrombin activity, thus inhibiting formation of blood clots, but those who are antithrombin-deficient are resistant to heparin treatment.
Sample Type - Blood
Reporting Time - 3 Hrs
Prerequisites - No special preparation required
Price - ₹2790/-
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