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 ...

Mucus in stool is normal, but it's not usually visible to the naked eye. When it is, you may notice stringy clear, white, or yellow goop in the toilet or clinging to your poop. It may be blood-tinged, ...