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  • Title: Automated direct antimicrobial susceptibility testing of microscopically screened urine cultures.
    Author: Tilton RE, Tilton RC.
    Journal: J Clin Microbiol; 1980 Feb; 11(2):157-61. PubMed ID: 6766953.
    Abstract:
    Two screening methods for urine microbiology are proposed: one in which the Gram-stained smear is used to detect significant bacteriuria, and another in which Autobac antibiotic susceptibility tests are performed directly on positive urine samples. Results on 1,350 specimens indicated that an average of 18 bacteria per oil immersion field were observed in the urine of patients with significant bacteriuria, and an average of less than 1 bacterium per oil immersion field was found in the urine of patients without significant bacteriuria. Direct susceptibility testing by Autobac proved to be rapid (3 h versus 24 h) and reliable (0.5 to 1.2% discrepancies).
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