This test is used to screen the stool for the presence of culturable pathogenic bacteria. It aids in the diagnosis of any kind of bacterial infection of the gut or GI tract. This test is carried out in combination with other tests including ova and parasite exam and GI pathogen panel to identify the presence of a parasitic or viral infection. The common bacteria that are screened and cultured using this technique include species of E. coli, Salmonella, Shigella and Campylobacter. The symptoms that lead to the recommendation of this test include abdominal pain, fever, nausea, vomiting, diarrhea and fatigue.