A stool culture is done to: 1  Find the cause of symptoms. 2  Find and identify certain types of organisms that are causing infections or diseases. 3  Identify a person who may not have any symptoms of disease but who carries bacteria that can spread infection to others. 4  Find out if treatment for an infection has worked as it should.
Meat may stay in the intestines for 24-72 hours and still depend on its type. Likewise, red meat in particular takes 1-3 days to complete the digestion process because of fat content and high protein, according to Lisa Cicciarello Andrews of University of Cincinnati.
It takes about 24 to 72 hours for most people to digest food. However, because hamburgers are a fattier food, it can take up to three days to fully digest, according to research by Dian Dooley, an associate professor of Food Science and Human Nutrition at the University of Hawaii at Manoa.