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A clean catch is a method of collecting a urine sample for various tests, including urinalysis and urine culture.
To obtain a clean-catch urine sample, boys and men should wipe the head of the penis clean. Girls and women need to wipe between the vagina "lips" (labia) with soapy water and rinse well. Your doctor may give you a special clean-catch kit that contains a cleansing solution and sterile wipes.
To perform this test, first urinate a small amount into the toilet bowl to clear the urethra of any contaminants. Then, collect a sample of urine in a clean or sterile container. About 1 - 2 ounces of urine is needed for a test. Remove the container from the urine stream without stopping the flow. You may finish urinating into the toilet bowl. Take the sample to the lab.
For infants, the genital area is cleaned and dried, and then a collection device is attached to collect the urine. If you are asked to collect the urine, be sure the collection device is attached securely to prevent leakage. After your baby has urinated, the urine (at least 20 cc) is placed in a sterile container.
Do not use antiseptics, as they may prevent bacteria from growing during the culture.
You may receive a specimen container and instructions on how to cleanse the area and collect the urine sample. If the collection is being taken from an infant, you may need a couple of extra collection bags.
Rarely, infants may have a local skin reaction to the tape used with the collection bags.
The urinary tract naturally contains bacteria, which can contaminate a urine sample. The clean-catch method is used to prevent these bacteria from getting into the urine sample. The clean catch can be used for a routine urinalysis , a urine culture, or other urine tests that require pure urine for accurate results.
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