A stool test involves the collection and analysis of fecal matter to diagnose the presence or absence of a medical condition.
Fecal occult blood test 
One of the most common stool tests, the fecal occult blood test can be used to diagnose many conditions that cause bleeding in the gastrointestinal system including colorectal cancer or stomach cancer.
Microbiology tests 
Parasitic diseases such as ascariasis, hookworm, strongyloidiasis and whipworm can be diagnosed by examining stools under a microscope for the presence of worm larvae or eggs. Some bacterial diseases can be detected with a stool culture. Toxins from bacteria such as Clostridium difficile ('C. diff.') can also be identified. Viruses such as rotavirus can also be found in stools.
Chemical tests 
Faecal elastase levels are becoming the mainstay of pancreatitis diagnosis.
See also 
- "Fecal Occult Blood Test (FOBT)".
- "Stool culture".
- "Stool Acidity Test - MedicineNet.com".
- "MedlinePlus Medical Encyclopedia: Fecal fat".