CCBMA Clinical Practice Exam

Minimizing contamination of a urine sample intended for culture is the key idea. A clean catch specimen includes cleansing the urethral opening with an antiseptic towelette before you start urinating and then collecting urine midstream. That cleansing step helps remove bacteria from the surrounding skin, so the sample more accurately reflects what’s in the bladder rather than contaminants from the genital area. While other methods focus on when you collect the urine (the initial portion vs the middle), the explicit cleansing is what defines the clean catch approach.