Line Blot Assay for Anticardiolipin Antibodies (Qualitative)

Why This Test Might Be Ordered

Your healthcare provider may recommend this test if you have symptoms like unexplained blood clots, unusual bleeding, or autoimmune conditions such as lupus or antiphospholipid syndrome. It could also be used as part of a broader evaluation for unexplained complications or recurrent pregnancy loss.

How the Test Works

The line blot assay uses a specific method to identify anticardiolipin antibodies in your blood. A sample of your blood is tested to see if it reacts with cardiolipin proteins, which are found in certain blood cells and tissues. If antibodies are present, they will bind to the cardiolipin on the test strip, creating a visible line.

Sample Collection and Preparation

You will have a small amount of blood drawn from a vein, usually in your arm. The blood sample is then sent to a lab for processing and testing. This test typically requires a single blood draw and does not require fasting.

What to Expect Before the Test

No special preparation is needed for this test. You may have some mild discomfort or bruising at the injection site, but this usually goes away quickly. If you are on blood-thinning medications, let your healthcare provider know before the test.