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[Predictive value of reactive strips in urinary infection]
1Laboratório de Patologia Clínica, Departamento de Microbiologia, Hospital Garcia de Orta, Almada.
Acta Medica Portuguesa
|March 7, 2002
Summary
Urinary tract infection (UTI) diagnosis can be confirmed using urine culture and Gram-stain. Reactive strips for nitrite and leucocyte-esterase offer a faster, cost-effective alternative for excluding UTI when both results are negative.
Area of Science:
- Clinical microbiology
- Diagnostic testing
- Urology
Context:
- Traditional urine culture and Gram-stain are standard for diagnosing urinary tract infections (UTIs).
- These methods are effective but are time-consuming and expensive.
- There is a need for rapid, cost-efficient diagnostic alternatives.
Purpose:
- To evaluate the diagnostic accuracy of reactive strips for nitrite and leucocyte-esterase.
- To determine the positive and negative predictive values of these rapid tests.
- To assess their utility as an alternative to traditional urine culture.
Summary:
- Reactive strips measuring nitrite and leucocyte-esterase were tested as a diagnostic tool for UTIs.
- The study assessed the predictive values of these biochemical markers.
- A negative result for both nitrite and leucocyte-esterase reliably excludes the diagnosis of UTI.
Impact:
- Provides a potentially faster and more economical method for UTI screening.
- Negative results from these strips can help clinicians confidently rule out infection.
- May reduce unnecessary laboratory workload and patient waiting times for results.
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