A Fungal Stain is a laboratory test used to detect fungal infections in tissues or body fluids. It involves applying special stains, such as Gram stain , KOH (potassium hydroxide) , or India ink , to a sample. These stains help identify fungal organisms under a microscope, aiding in the diagnosis of conditions like ringworm , candidiasis , or aspergillosis . The test helps identify the presence of fungal cells or spores, allowing for accurate treatment of fungal infections.