Zona-free hamster egg-sperm penetration assay: II. Correlative study with routine semen analysis.

This work studied the effect of variations in the different parameters of routine semen analysis on the penetration rate of the spermatozoa into the zona-free hamster eggs, using semen samples from 21 fertile donors, 57 infertile patients with normal spermiograms, 63 infertile patients with subnormal spermiograms, and 19 frozen semen samples. The results of the hamster test do not correlate with the percentage of motile spermatozoa, the percentage of live spermatozoa, or the percentage of spermatozoa with normal morphology in the semen samples. A positive correlation was found between the results of the hamster test and three other parameters of the semen analysis: the sperm concentration, the progressive type of motility, and a pH range of 7.2-7.7, but these positive correlations were statistically insignificant.