Human semen relaxin and its correlation with the parameters of semen analysis

The relaxin content of 92 normal semen samples and 85 semen samples selected at random was correlated to the parameters measured on routine semen analysis in those samples. The concentration of immunoactive relaxin in a sample of semen plasma did not correlate with any of the parameters commonly used for semen analysis: count, percent motility, grade of forward progression, volume, and morphology.