Final answer:
Collecting a urine sample for bacterial culture should be done to avoid contamination and identify the type of bacteria causing the infection.
Step-by-step explanation:
Collecting a urine sample for bacterial culture should be done to avoid contamination and identify the type of bacteria causing the infection. A urine culture is used to confirm the presence of bacteria and determine which antibiotics are most effective in treating the infection. In order to culture a clean sample, a clean catch urine sample is collected by washing the genital area before urinating and then collecting the midstream urine in a sterile container.