What is lupus anticoagulant testing
Lupus anticoagulant (LA) testing is a series of tests used to detect lupus anticoagulant in the blood
Why get tested:
When to get tested:
- help investigate the cause of a blood clot (thrombotic episode)
- evaluate a prolonged partial thromboplastin time (PTT)
- help determine the cause of recurrent miscarriages, or as part of an evaluation for antiphospholipid syndrome
If the lupus anticoagulant is present according to the testing result
- have signs and symptoms of a blood clot in a vein or artery
- have a prolonged PTT test
- have recurrent miscarriages
, you need to repeat the testing about 12 weeks later in order to confirm that LA still exists
, especially for those who are tested for antiphospholipid syndrome
The following tests may be done to help diagnose a lupus anticoagulant:
If you have any questions, please consult your doctor.
- Coagulation factor assays: rule out factor deficiencies that may cause a prolonged PTT and bleeding episodes; also help in detecting lupus anticoagulant.
- Complete blood count (CBC): includes a platelet count; mild to moderate thrombocytopenia (low platelet count) is often seen along with the lupus anticoagulant; moderate to severe thrombocytopenia may develop in patients receiving anticoagulant (heparin) therapy for lupus anticoagulant-associated thrombosis.
- Tissue thromboplastin inhibition test (rarely performed nowadays)
Keywords: lupus anticoagulant testing