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At a Glance
Why Get Tested?
To help investigate the presence of blood clots or an unexpectedly prolonged PTT (partial thromboplastin time), especially if you have had recurrent miscarriages; 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 an unexplained 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?