This is the comprehensive, all-in-one panel for investigating Antiphospholipid Syndrome (APS). It searches for both the long-term "memory" (IgG) and the "first-responder" (IgM) antibodies that attack cardiolipins. This test is essential if you have experienced recurrent, unexplained blood clots or miscarriages. A simple blood draw is required. This 'full picture' approach is the gold standard, providing your doctor with the single, conclusive answer needed to diagnose the autoimmune cause of your symptoms.