How is the clean-catch technique for collecting urine specimen performed in female patients with acute pyelonephritis?

Updated: Jul 01, 2021
  • Author: Tibor Fulop, MD, PhD, FACP, FASN; Chief Editor: Vecihi Batuman, MD, FASN  more...
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Importantly, female patients should wash only the area where urine is passed, wash front to back, hold the cup by the outside, and keep the labia spread while collecting the urine. This is to ensure that the urine goes into the cup without touching the labia. The presence of a large number of epithelial cells on microscopic examination suggests that the specimen is not a true clean catch and is unreliable for culture because of contamination with vaginal contents.

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