A stool test is a diagnostic procedure that involves analyzing fecal matter, or poop, to check for signs of infection, inflammation, or disease. The specific analysis depends on a person’s symptoms ...

A cortisol level test uses a blood sample to measure the level of cortisol in your blood. Cortisol is a steroid hormone released by the adrenal glands. The adrenal glands sit on top of your kidneys. A ...