At a Glance
Why Get Tested?
To help investigate inappropriate blood clot formation; to help determine the cause of recurrent miscarriage; to evaluate a prolonged PTT (partial thromboplastin time); as part of an evaluation for antiphospholipid syndrome (APS); sometimes to help diagnose or evaluate an autoimmune disorder
When to Get Tested?
When you have a prolonged PTT test; when you have had recurrent unexplained blood clots; when you have had recurrent miscarriages, especially in the second and third trimesters
A blood sample drawn from a vein in your arm
Test Preparation Needed?