J Med Assoc Thai 2002; 85 (8):922

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Reagent Strip Testing is Not Sensitive for the Screening of Asymptomatic Bacteriuria in Pregnant Women
Lumbiganon P Mail, Chumworathayee B , Chongsomchai C , Thinkhamrop J

The objective of the study was to assess the diagnostic performance of the reagent strip in
screening for asymptomatic bacteriuria in pregnant women using urine culture as a gold standard.
This study comprised 204 asymptomatic pregnant women who attended their first antenatal care at
Srinagarind Hospital, Khon Kaen University from April 1, 1999 to June 30, 1999. Women with symp-
toms of urinary tract infection, antibiotic treatment within the previous 7 days, pregnancy-induced
hypertension, bleeding per vagina and history of urinary tract diseases were excluded. Urine specimens
were collected by clean catched midstream urine technique for urinalysis, reagent strip test and urine
culture. Diagnostic performance of reagent strip in terms of sensitivity, specificity, positive and nega-
tive predictive value was analyzed. Urine reagent strip test had a sensitivity of 13.9 per cent, a speci-
ficity of 95.6 per cent, a positive predictive value of 46.1 per cent, a negative predictive value of 80.6
per cent in detecting asymptomatic bacteriuria in pregnant women.
Key word : Reagent Strip, Asymptomatic Bacteriuria, Pregnancy

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