Fecalysis is the analysis of human stool to determine the presence of certain pathologic conditions in the patient.   Evaluates stool color, consistency, parasite identific … ation and early detection of gastro-intestinal problems.6 people found this useful.ometimes, stool may be checked for dangerous bacteria, like salmonella, or for viral infections like parvovirus and … coronavirus. These tests are usually only performed when the pet is suspected of having these diseases and are not routine.