The Mycoplasma Ureaplasma / Culture (M. hominis / U. urealyticum) test is used to detect and culture two types of bacteria, Mycoplasma hominis and Ureaplasma urealyticum, in clinical specimens, such as vaginal fluid, urethral fluid, urine, or fluid from other areas of infection. These are two types of bacteria that are commonly found in genital, urinary, and other infections.