In general, in clean catch, midstream specimens, colony counts in fresh bladder urine from infected patients show more than 10,000 CFU/mL.
A colony count of more than 10,000 CFU/mL is significant in urine collected via an indwelling catheter, more than 1,000 CFU/mL if collected by single (straight) catheterization.
Regardless of the collection method, if more than two organisms are present at greater than 10,000 CFU/mL, only a single, predominating pathogen will be identified. If neither predominates, the report will indicate the presumptive identity of each with a comment suggesting the pattern of growth suggests poor specimen quality.
Customized protocols are used for diagnosis of prostatitis, ileal conduits, suprapubic aspirates, cystoscopy or when low count UTI (urethral syndrome) is indicated.
Susceptibility tests are performed based on UWHC Microbiology laboratory protocols.