The Anti-Cardiolipin IgM (aCL IgM) Test is a blood test used to detect the presence and level of Immunoglobulin M (IgM) antibodies that target cardiolipin, a specific type of fat (phospholipid) found in cell membranes, particularly in the walls of blood vessels.
This test is primarily ordered to screen for Antiphospholipid Syndrome (APS), an autoimmune disorder characterized by a tendency toward blood clot formation (thrombosis) and complications during pregnancy.
