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 ...

What is a sputum Gram’s stain? A sputum Gram’s stain is a laboratory test that allows your doctor to diagnose a bacterial infection in your respiratory tract. They may order it if you have symptoms of ...

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 ...