Lupus Anticoagulant
Also known as: Lupus Antibody; LA; Lupus Inhibitor
Formal name: Lupus Anticoagulant
Related tests: Partial Thromboplastin Time (PTT); LA Sensitive PTT (LA-PTT); Thrombin Time; Dilute or Modified Russell Viper Venom Screen (dRVVT or MRVVT); Anticardiolipin Antibodies; Prothrombin Time (PT); Antiphospholipid Antibodies
At a Glance
Why Get Tested?
To help evaluate a prolonged partial thromboplastin time (PTT) and/or a thrombotic episode, to help determine the cause of recurrent fetal loss, and as part of an evaluation for antiphospholipid syndrome; not a diagnostic test for lupus
When to Get Tested?
When you have a prolonged PTT test; when you have had a venous or arterial thromboembolism; when you have had recurrent miscarriages, especially in the 2nd and 3rd trimesters
Sample Required?
A blood sample obtained by inserting a needle into a vein in the arm
