This test measures the amount of a protein called coagulation factor XII in your blood. Factor XII is one of several clotting factors.

This test measures the amount of factor XI in your blood. Factor XI is a substance that plays an important role in blood clotting.

This test looks for certain antibodies in your blood that may mean you have celiac disease, an autoimmune disease.

This test measures the levels of catecholamines in your blood. The catecholamine hormones are adrenaline (epinephrine), norepinephrine, and dopamine.

This test measures the amount of a substance called carnitine in your blood. Carnitine makes it possible for your body to digest fatty acids.

This test looks for a certain kind of antibody in your blood. It helps your doctor diagnose blood clotting disorders and autoimmune diseases.

This test measures the levels of cardiac biomarkers in your blood. Some of these markers might show up because you've had a heart attack.

This test measures a protein called carcinoembryonic antigen (CEA) in your blood. This protein is found on some types of cancer cells.

This test looks for minuscule amounts of albumin in your urine. The test can find out if diabetes has damaged your kidneys.

This test measures the amount of a substance called methylmalonic acid in your urine. It can help diagnose a vitamin B-12 deficiency.