How long it takes to get the results of a stool test depends on the item of the stool test. If the stool test is a routine stool test, that is, the appearance of the stool, whether there are red blood cells, white blood cells, etc., the results are usually available within 1-2 hours. If the stool test is an occult blood test, the results can be ready in half an hour to one hour. If the patient needs a bacterial smear test due to diarrhea or other factors, the results are usually available in about 2-4 hours. If a stool culture is needed at the same time, the results are usually available in 3-5 days. If the patient has a positive culture, the results will be available within 1-3 days, and a drug sensitivity test will be given based on the positive stool test results. If a stool culture or drug sensitivity test is done, the total time for results is 3-5 days.