The Gram Stain Test is a microbiological laboratory technique that is used to differentiate and categorize bacteria into major groups based on your overall cell wall composition. The test includes staining bacterial cells with crystal Violet dye, iodine alcohol wash and safranin dye. It leads to two different groups: gram positive and gram-negative bacteria. The gram stain test in Delhi helps in identifying and categorizing bacteria. It also helps in initial classification and guiding further diagnostic procedures and treatment choices. Gram staining helps in predicting antibiotic susceptibility. Gram-positive bacteria basically respond to some antibiotics differently from the gram-negative bacteria. The test is very important in diagnosing infections as some types of bacteria are linked with specific diseases for infections.