Rapid detection of urinary tract infection caused byEscherichia coli orProteeae species

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Abstract
Beta-glucuronidase and phenylalanine deaminase tests for screening urine specimens to provide rapid reporting (2 hours) ofEscherichia coli andProteeae species were evaluated. A total of 2,318 urine specimens were processed for these two tests. For the detection ofEscherichia coli in urine, the sensitivity and specificity of the β-glucuronidase test were 0.96 and 0.99 respectively; predictive positive and negative values were 0.97 and 0.99. For the detection ofProteeae in urine, the sensitivity and specificity of the phenylalanine test were 0.92 and 0.99. Predictive values were 0.99 for a negative test and 0.95 for a positive test. The data suggest that β-glucuronidase and phenylalanine deaminase tests performed directly in urine sediment have potential usefulness as rapid and reliable tests that are easy to perform and interpret for the diagnosis of urinary tract infections caused byEscherichia coli orProteeae species.

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