TY - CHAP M1 - Book, Section TI - Methods in Clinical Microbiology A1 - Laposata, Michael A1 - McCaffrey, Peter PY - 2022 T2 - Clinical Laboratory Methods: Atlas of Commonly Performed Tests AB - The Gram stain is used to rapidly identify organisms in a patient specimen and classify them as either gram-positive or gram-negative. This assay can identify in minutes a pathogenic organism if it is present in sufficient number and the test is performed correctly. This test requires microscopic examination of a stained slide, and recognition that gram-positive organisms are purple and gram-negative organisms are red. The specimen from a patient which may contain pathogenic organisms is applied to a glass slide, and then fixed and stained in a series of steps that ultimately leads to the differential staining of gram-positive and gram-negative organisms. SN - PB - McGraw Hill, LLC CY - New York, NY Y2 - 2024/04/18 UR - accessmedicine.mhmedical.com/content.aspx?aid=1187001166 ER -