Abstract
A simple microbiological method to identify antimicrobial agents in urine is described. Of 1,514 consecutive urine specimens received from general practitioners, 302 (19.94%) contained antimicrobial activity. The antibacterial agent was identified confidently in 284 of these. Surprisingly, 83 (5.48%) urine specimens contained an antimicrobial substance not usually used in the treatment of urinary tract infection.
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