For organisms that are difficult to Gram stain. Uses the aminopeptidase reaction. LanaGram™ confirms the Gram stain reaction of Gram-negative and Gram-positive aerobic or facultatively anaerobic rods or coccobacilli. This test is not recommended for use with Gram-positive cocci, microaerophilic or obligate anaerobic organisms.

LanaGram™ produces a rapid color change in a tube, Gram-negatives turn yellow, Gram-positives remain clear. Ideal for Bacillus, Listeria, Lactobacillus, and non-fermentors, all of which can be difficult to Gram stain.