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.
Fats take the longest to digest (4-6 hours), meat protein is next (3-4 hours), vegetables are next (30-45 minutes), and finally fruits (20-30 minutes). Herbivores have differences in their digestive systems compared to carnivores.