Understand Your Test

Antiphospholipid Antibodies

Formal Name


Antiphospholipid Antibodies


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.