The Lupus Anticoagulant (LA) screen is a blood test used to detect the presence of Lupus Anticoagulant antibodies in the blood. These antibodies interfere with the normal clotting process and can increase the risk of developing blood clots, which can lead to serious health complications such as stroke, heart attack, or deep vein thrombosis. The LA screen test is often ordered along with other tests, such as the prothrombin time (PT) and activated partial thromboplastin time (aPTT), to diagnose antiphospholipid syndrome (APS), a condition that causes blood clots and other complications. It is important to note that a positive LA screen test result does not necessarily mean a person has APS, as the antibodies can also be present in people with other autoimmune disorders or infections. Further testing and consultation with a healthcare provider are necessary to confirm a diagnosis and develop a treatment plan.