Comparison of "gram-sure" with vancomycin disks in distinguishing between gram-negative and gram-positive rods.

Leonard, R B; Ohlson, S; Newcomb-Gayman, P L; Carroll, K C · Am J Clin Pathol · 1995

rct · Level II

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Abstract

A study was performed to compare Gram-Sure (JRGA Diagnostics, Rancho Dominguez, CA) with vancomycin disk susceptibility (5 micrograms and 30 micrograms) for clarification of the Gram reaction. Eighty-eight isolates representing 14 gram-negative and gram-positive genera were tested. Gram-Sure was superior to vancomycin susceptibility as a predictor of the Gram reaction in a select group of difficult organisms.

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