Child or adult:
Collect a "clean-catch" (midstream) urine sample. To obtain a clean-catch sample, men or boys will wipe clean the head of the penis. Women or girls will wash the area between the lips of the vagina with soapy water and rinse well. As you start to urinate, allow a small amount to fall into the toilet bowl. This clears the urethra of contaminants. Then, in a clean container, catch about 1 to 2 ounces of urine and remove the container from the urine stream. Give the container to the health care provider or assistant.

Infant:
Thoroughly wash the area around the urethra. Open a urine collection bag (a plastic bag with an adhesive paper on one end), and place it on your infant. For males, the entire penis can be placed in the bag and the adhesive attached to the skin. For females, the bag is placed over the labia. Diaper the infant as usual, covering the bag.

Check your baby frequently and remove the bag after the infant has urinated into it (for active infants, this procedure may take a couple of attempts, as they may displace the bag). Drain the urine into a container and give it to the health care provider.