Beta-2 Glycoprotein I IgM Antibody Test
Clarify your antiphospholipid risk and unexplained clotting.
The Beta-2 Glycoprotein I IgM Antibody Test is a focused blood test that looks for IgM-class antibodies directed against beta-2 glycoprotein I (β2-GPI), a protein that binds to phospholipids. It is used alongside other antiphospholipid tests to investigate an increased tendency to blood clotting (thrombosis) or recurrent pregnancy loss, and to help assess antiphospholipid syndrome (APS). It may be requested when you have had an unexplained blood clot, a stroke at a young age, recurrent miscarriages, or a low platelet count, or when your doctor is monitoring a known antiphospholipid antibody profile.
What it screens for
- Anti-Beta-2 Glycoprotein I IgM (β2-GPI IgM): detects IgM antibodies that target beta-2 glycoprotein I. These antibodies are part of the antiphospholipid antibody family and are associated with an increased risk of venous or arterial thrombosis and pregnancy complications. A positive result is usually interpreted together with other antiphospholipid markers (such as anticardiolipin antibodies and lupus anticoagulant) and with your clinical history, because antibodies can be transient and may need to be confirmed on a repeat sample.
Why it matters
Identifying β2-GPI IgM antibodies can help explain otherwise unexplained clotting or pregnancy problems and guide your doctor on whether further investigation or specialist management is appropriate. Because a single result is not a diagnosis on its own, it is best interpreted in the context of your symptoms, other antibody tests, and repeat testing over time.
Antiphospholipid Antibodies
- Anti-Beta-2 Glycoprotein I IgM (β2-GPI IgM)
No special preparation required.
For blood tests, we recommend drinking plenty of water beforehand to ensure smooth sample collection. If you are taking any regular medication, continue to do so unless advised otherwise by your doctor.
Important Clinical Information:
This test is a screening tool to monitor and support your overall health. It does not replace your GP or consultant.
Always discuss your test results, especially any abnormal results, with your GP, who can interpret them in the context of your medical history and overall health.