Abstract
The zona-free hamster egg penetration test was performed on semen samples from 21 fertile donors, 57 infertile patients with normal semen parameters, and 63 infertile patients with subnormal spermiogram, as well as on 19 frozen semen samples. In the donor group 100% of the samples gave a positive range of penetration (PRP) of 20-96% with a mean penetration rate (MPR) of 53%, while 84% of the frozen samples showed a PRP of 18-44% and an MPR of 31%. Although 74% of the samples from infertile patients with normal spermiograms gave a PRP of 11-92% and an MPR of 34%, only 46% of the semen samples from the infertile patients with subnormal spermiogram showed a PRP of 21-100% but an MRP of 43%.
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