title: Accuracy of the KOH and vancomycin tests in determining the Gram reaction of non-enterobacterial rods.
abstract: Two nonstaining tests for the Gram reaction, the KOH and vancomycin disk (5 micrograms) tests, were employed on 488 strains of aerobic gram-negative and gram-positive rods. Since each test may yield false results with certain species, the use of a combination is suggested.
mesh_terms: D001431:Bacteriological Techniques; D005188:False Negative Reactions; D005189:False Positive Reactions; D006088:Gram-Negative Aerobic Bacteria / Q000032:analysis*; D006094:Gram-Positive Bacteria / Q000032:analysis*; D006878:Hydroxides; D011188:Potassium; D017680:Potassium Compounds; D014640:Vancomycin
chemical_list: D006878:Hydroxides; D017680:Potassium Compounds; D014640:Vancomycin; D011188:Potassium; C029943:potassium hydroxide