How does freezing affect sperm?
Between 50% to 80% of sperm die in the freezing process. Sperm survival varies a great deal from individual to individual and from ejaculate to ejaculate. We prepare a test thaw vial containing a small portion of semen from each stored ejaculatea week after freezing, we thaw this vial and take a sperm count to determine the sperm survival rate for that ejaculate. (We ask that you call us for test thaw results). If you will only be able to store one ejaculate, or you have samples with very low sperm counts, you can ask that we not prepare a test thaw vial; in these instances, our first priority is to store as much genetic material as possible.
