BETA 2 GLYCOPROTEIN IGA

Beta-2 Glycoprotein IgA, Serum

What it is

The Beta-2 Glycoprotein IgA test measures IgA class autoantibodies directed against Beta-2 Glycoprotein I (β2GPI), a plasma protein involved in blood clotting regulation. These antibodies belong to the antiphospholipid antibody family and may contribute to abnormal clotting and pregnancy complications.

Uses

This test is used to support the diagnosis of Antiphospholipid Syndrome (APS), especially when IgG and IgM tests are negative but clinical suspicion remains. It helps evaluate patients with unexplained blood clots, recurrent miscarriages, or autoimmune conditions, and may be ordered along with IgG and IgM Beta-2 Glycoprotein antibody tests.

Symptoms That May Lead to the Test

Symptoms and conditions that may lead to this test include deep vein thrombosis (DVT), pulmonary embolism, recurrent pregnancy loss, stillbirth, preeclampsia, stroke at a young age, or unexplained prolonged clotting times.

Abnormal Results

Positive Beta-2 Glycoprotein IgA: Suggests an increased risk of clotting disorders and pregnancy complications, and may support a diagnosis of Antiphospholipid Syndrome when consistent with clinical findings.

Negative Result: Indicates no detectable IgA antibodies. However, APS cannot be excluded as patients may still test positive for IgG or IgM antibodies.

Risks

The test is performed using a routine blood sample and carries minimal risks. Some individuals may experience mild pain, bruising, or bleeding at the puncture site, and rarely dizziness or infection.