A fungal culture test is often used to determine if fungus is present in the infected area as well as identify the fungus in question and determine an effective course of treatment. Fungal infections are more common than most, starting with the most common one of all, the ringworm. This infection as with all other types of fungal infections often occurs because of heat, moisture, and skin abrasions. And if you feel an itchy sensation on certain areas of your body, coupled with maceration, raised welts, as well as redness, then you need to consult your physician right away. Your doctor would then run a fungus culture test, to both determine and identify the fungus so that he can prescribe an effective treatment.