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  • Title: Value of a screening urinalysis in pregnancy.
    Author: Soisson AP, Watson WJ, Benson WL, Read JA.
    Journal: J Reprod Med; 1985 Aug; 30(8):588-90. PubMed ID: 4045832.
    Abstract:
    In order to assess the value of a screening urinalysis in the detection of urinary tract infection, the results of routine urinalyses from 1,062 obstetric patients were compared to subsequent culture results. A positive urine culture was predicted by pyuria, bacteriuria and a positive nitrite test; the predictive values were 23%, 21% and 87%, respectively. If all the parameters were negative, 96% of the cultures were negative. These findings suggest that in the interest of cost effectiveness, the urine can be cultured only when the screening urinalysis shows pyuria, bacteriuria or a positive nitrite test.
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