Kenya Medical Laboratory Tests
Gram Stain Test in Kenya
Brief DescriptionThis test checks for bacteria at the site of a suspected infection such as the throat, lungs, genitals, or in skin wounds. The two main categories of bacterial infections (Gram-positive and Gram-negative) are diagnosed based on how the bacteria reacts to the Gram stain.
SynonymsGram's method, Gram's procedure
Patient PreparationSpecial preparations are not required.
Sample TypeMaterial from infected area
Sample volumeGlass slide smear
Sample collection ContainerClean glass slide
Sample collection instructionsThe material is carefully collected from infected area using a strerile swab. The swab should be gently rolled onto the slide to make a thin smear and the slide air dried.
Sample storageMaintained at room temperature
Reference rangeNegative/Normal gram stain.
Results Turnaround1 - 2days after receipt of samples
Diseases / Diagnostic IndicatorsIf the bacteria was colored purple, it indicates a Gram-positive infection. If the bacteria was colored pink or red, it indicates a Gram-negative infection. The shape can provide more information about the type of infection in that, a round shape identifies cocci while rod shape identifies bacilli.