Stool tests

diagnostic medical tool designed to classify the form of human faeces into seven categories

Medical examination

medical test for blood in the feces

group of dyes

Nitrazine or phenaphthazine is a pH indicator dye often used in medicine. More sensitive than litmus, nitrazine indicates pH in the range of 4.5 to 7.5. Nitrazine is usually used as the disodium salt.

test for the presence for occult blood

Laboratory method for human stool samples