Final answer:
Finding more than 100 bacteria per milliliter indicates a urinary tract infection.
Step-by-step explanation:
Finding more than 100 bacteria per milliliter indicates a urinary tract infection. This is because a normal urine sample should not contain a high number of bacteria. If there are more than 100 bacteria present, it suggests an overgrowth of bacteria in the urinary tract, which is indicative of an infection.