The association of semen factors with the recovery of Ureaplasma urealyticum.

Ninety-six semen samples from males under examination for suspected subfertility were examined to determine if alterations in specific semen parameters could be associated with the presence or absence of Ureaplasma urealyticum. Forty-three (44.8%) of the specimens cultured positive for U. urealyticum. Both positive and negative specimens have a normal average motility rating. Sperm counts (millions per milliliter) were slightly higher in U. urealyticum positive samples. Average ejaculate volumes were identical between the two groups. Morphologic abnormalities were not found more frequently in U. urealyticum-positive samples. No statistically significant difference between seminal parameters of positive and negative samples were noted with the one-way analysis of variance test. Nonparametric analysis produced similar nonsignificant results.