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Obstetrics & Gynecology 1987;69:550-553
© 1987 by The American College of Obstetricians and Gynecologists
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An Evaluation of Two Rapid Bacteriuria Screening Procedures

S. GENE McNEELEY, MD, VICKIE S. BASELSKI, PhD and GEORGE M. RYAN, MD

Departments of Obstetrics and Gynecology and Pathology, University of Tennessee College of Medicine, Memphis, Tennessee.

Abstract

Two commercially available rapid bacteriuria screening procedures were evaluated for routine screening for 104 or more colony forming units per milliliter of pathogenic bacteria in two female patient populations. In 694 obstetric patients with 56 cases of significant bacteriuria, the sensitivity, specificity, positive predictive, and negative predictive values, respectively, were as follows: for Chemstrip LN, 69.6, 83.4, 26.9, and 96.9%; and for Bac-T-Screen, 96.4, 56.0, 16.1, and 99.4%. In 143 nonpregnant females with 32 cases of significant bacteriuria, these values were: for Chemstrip LN, 71.9, 75.7, 46.0, and 90.3%; and for Bac-T-Screen, 84.4, 65.8, 41.5, and 93.6%. These results indicate that the LN strip did not have acceptable sensitivity in either patient group. The Bac-T-Screen had better sensitivity, particularly for obstetric patients; however, a high false-positive rate and high cost per test may restrict its use in those clinical settings where culture is available and cost-effective.




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D. G Tincello and D. H Richmond
Evaluation of reagent strips in detecting asymptomatic bacteriuria in early pregnancy: prospective case series
BMJ, February 7, 1998; 316(7129): 435 - 437.
[Abstract] [Full Text]


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