Collection of urine as clean-catch midstream specimens is usually not possible in critically ill patients, and suprapubic aspiration may be considered. Suprapubic aspirates should be clearly identified because any growth from these specimens is significant.
In catheterized patients, urine should be collected with a needle and syringe directly from the clamped catheter. Such specimens should be clearly identified as conventional quantitation is not used. Urinary catheter tips should not be submitted for culture as they reflect only what is colonizing the catheter and not necessarily the patient.
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