Why is a clean-catch midstream urine used for a urine culture as opposed to a clean-catch urine?
A)The first portion of the urine flow washes contaminants from the urethra and the next portion of urine is more representative of the bladder.
B)The name was changed, but the procedure remains the same and the entire amount of urine from the bladder is cultured.
C)No urine is free from contamination, so just wipe the external genitalia and void into the cup.
D)Catheterized specimens are also called clean-catch midstream urine specimen.

Question

Quizplus · Accepted Answer

Instructions for urine collection must include an explanation of the clean-catch midstream urine specimen.A first morning specimen is preferred because it provides a more concentrated sample.The patient collects this specimen following cleansing of external genitalia to reduce the presence of indigenous flora.Patients are asked to void without collecting the first portion of the urine and instead to collect the middle portion.The first portion of the urine flow washes contaminants from the urethra and the midstream portion is more representative of the bladder.Personnel collecting catheterized specimens should also use this technique to eliminate organisms carried up the urethra during catheterization.

Why Is a Clean-Catch Midstream Urine Used for a Urine