This blood test is done to help your doctor diagnose a type of illness called an autoimmune disease.

This test checks the level of a certain antibody in your blood that can indicate heart damage. The antibodies show up before symptoms appear.

This test looks for certain substances in your blood that may mean you have a form of liver disease.

This test measures the amount of antidiuretic hormone (ADH) in your blood. ADH regulates your body's balance of water.

This test looks at electrically charged particles in your blood to help your doctor diagnose acid-base imbalances.

This test measures the level of a certain enzyme in your blood. It can help diagnose a condition called sarcoidosis.

This test looks for certain bacteria in a wound or an infection in a fluid sample. These bacteria are called anaerobic because they don’t need oxygen to grow.

This test measures the amount of a drug called amphetamine in your blood. The test is most often used to screen for drug abuse.

This test is done to see how well your baby is developing inside you.

This test checks for the chemical oxalate in your blood. High levels of this substance can make it more likely that you will develop kidney stones.