The Cervical Swab for Fungus C/S with Fungus Stain (KOH) is requested when a healthcare provider suspects that a patient may have a fungal infection of the female genital tract, which can cause symptoms such as itching, burning, discharge, and pain during intercourse. Fungal infections of the female genital tract can occur in women of all ages and are especially common in women who are pregnant, taking antibiotics, or using hormonal contraceptives.