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.
Animal proteins: Egg yolk - 30 min. digestion time Whole egg - 45 min. Fish - cod, scrod, flounder, sole seafood - 30 min. digestion time Fish - salmon, salmon trout, herring, (more fatty fish) - 45 min. to 60 digestion time Chicken - 11/2 to 2 hours digestion time (without skin) Turkey - 2 to 2 1/4 hours digestion time (without skin) Beef, lamb - 3 to 4 hours digestion time Pork - 41/2 to 5 hours.