Fungal Stain (KOH Mount)

Fungal Stain is a critical diagnostic procedure used in microbiology and pathology to visualize fungal elements—such as hyphae, spores, and yeast cells—that are otherwise transparent under a standard microscope. Because the cell walls of fungi are composed of chitin and polycaccharides, they require specific dyes to create the contrast necessary for identification.

Accurate staining allows clinicians to differentiate between species based on morphology—such as the spoke-and-wheel appearance of certain yeasts or the branching patterns of molds. It is often the fastest way to confirm a fungal infection before more time-consuming cultures are completed.