This test measures the level of triiodothyronine (T3) in your blood. T3 is a type of hormone made by your thyroid gland.

This test checks for antibodies that are a sign of Sjogren syndrome, an autoimmune disease that makes it hard for your glands to make enough moisture.

This test measures the level of SHBG in your blood. It can help find out whether you have abnormal testosterone levels.

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.