Many symptoms that occur with APS are common even without the condition. They do not necessarily mean APS is the cause.
However, a doctor may order tests to detect the antibodies associated with APS when:
Blood clots or miscarriages occur for no apparent reason
A young person has a heart attack or stroke
People with antiphospholipid antibodies may have a positive screening test for syphilis even though they do not have the disease. Fortunately, confirmatory tests are available to rule out syphilis infection in a person with antiphospholipid antibodies.