Accuracy of Reagent Strip Testing for Urinary Tract Infection in the Elderly

The accuracy of reagent strip testing for urinary tract infection (UTI) was assessed in 100 elderly patients (50 acute patients admitted to hospital and 50 attending the day hospital). Reagent strip sensitivities were: Acute patients – urinary nitrite 83%, blood 67%, protein 72% and leucocytes 72%,...

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Bibliographic Details
Published in:Journal of the Royal Society of Medicine 1991-10, Vol.84 (10), p.598-599
Main Authors: Evans, P J, Leaker, B R, McNabb, W R, Lewis, R R
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Bacteriuria - diagnosis
Female
Hematuria - diagnosis
Humans
Male
Nitrites - urine
Proteinuria - diagnosis
Reagent Kits, Diagnostic - standards
Sensitivity and Specificity
Urinary Tract Infections - diagnosis
Urinary Tract Infections - urine
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Summary:The accuracy of reagent strip testing for urinary tract infection (UTI) was assessed in 100 elderly patients (50 acute patients admitted to hospital and 50 attending the day hospital). Reagent strip sensitivities were: Acute patients – urinary nitrite 83%, blood 67%, protein 72% and leucocytes 72%, and day hospital patients — urinary nitrite 90%, blood 65%, protein 30% and leucocytes 60%. Urinary nitrite specificities were 100% for both groups of patients. Only 28% of patients with a UTI had specific symptoms of the infection; pyrexia and a raised WBC also proved poor indicators. Urinary nitrite was thus the most accurate immediate indicator of UTI.
ISSN:0141-0768
1758-1095
DOI:10.1177/014107689108401009