Serum Anti-Cardiolipin Antibody (IgG) with Immunoassay

This test measures the level of antibodies in your blood. Antibodies are proteins your immune system makes to help fight infections, so this test shows whether your body has responded to a specific germ.

Your blood sample will be tested for IgG antibodies that bind to cardiolipin, a phospholipid commonly found in cell membranes. This is done using an immunoassay method, which detects the presence and concentration of these antibodies in your serum.

Your doctor may recommend this test if you were exposed to an infection, if you have symptoms that suggest a recent or past illness, or if they want to see whether your immune system has built a protective response.

Doctors may order this test if you have symptoms like joint pain, unexplained fatigue, or a history of blood clots, or if you have conditions like lupus or other autoimmune diseases. It can also be part of screening for antiphospholipid syndrome.

A positive result means antibodies were detected in your blood sample. This usually shows that you were exposed to the infection at some point, either recently or in the past, and your immune system responded by making antibodies.

A positive result indicates the presence of elevated IgG anti-cardiolipin antibodies, which may suggest an autoimmune response or increased risk of blood clots. However, this alone does not diagnose a specific condition and may require further evaluation.

Common symptoms to watch for include fever, tiredness, cough, body aches, and headache. If you develop these symptoms, especially after a known exposure to an infection, contact your doctor to ask whether this testing is right for you.

Symptoms that might prompt this test include recurrent blood clots, unexplained miscarriages, chronic fatigue, or symptoms of autoimmune diseases such as joint pain, rashes, or neurological issues. Always discuss symptoms with your healthcare provider.