This test looks for signs of antibodies called immunoglobulins in your blood. It can help diagnose an illness called multiple myeloma.

This is a series of tests that looks at how healthy your semen and sperm are.

This test looks for salmonella bacteria in your stool. Having these bacteria in your stool means you have a salmonella infection.

This test looks for high levels of salicylate, the main ingredient in aspirin. It may be used to diagnose an aspirin overdose or to keep track of people taking high doses for arthritis.

This test finds out if you have been exposed to the virus that causes measles, an extremely contagious disease.

This test measures the amount of rubella antibodies in your blood. If you're pregnant, it's especially important to know if you have immunity against this virus.

This stool test is used to diagnose a rotavirus infection, which causes vomiting and diarrhea.

This blood test is used to look for antibodies that your body makes to fight Rocky Mountain spotted fever, a serious bacterial infection caused by a tick bite.

This test checks for influenza antibodies in a sample of secretions from your nose or throat.

This test measures a substance called parathyroid hormone in your blood. This hormone is needed to help regulate the level of calcium in your blood.