This test measures the amount of a protein called coagulation factor XII in your blood. Factor XII is 1 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 that affects your intestines.

A cocaine screen is a test done to find out whether you have used cocaine recently. The test can be done on your urine, saliva, blood, hair, or sweat.

This test looks for toxic chemicals in your blood. These chemicals are most often found in insecticides, either those used in fields or those used in bug sprays.

This test measures the amount of cholesterol in your blood to help determine your risk for heart disease.

This test measures the amount of chloride in your urine. Knowing your chloride level is useful if you have a condition called metabolic alkalosis.

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 helps your healthcare provider diagnose clotting disorders and autoimmune diseases. It measures the concentration of antibodies related to a fat molecule in your blood.