Frozen sperm as good as fresh for test-tube babies

Frozen sperm works just as well as fresh when trying to make test-tube babies for infertile couples, researchers said on Wednesday in a finding that should take some of the pressure off would-be fathers.

The study, presented at a meeting of the American Urological Association in San Francisco, means men do not necessarily have to produce fresh sperm on demand to fertilize their partners’ eggs for in vitro fertilization.

"This data supports the continued and expanded use of frozen sperm for IVF,” said Dr. Shane Russell of the Mayo Clinic in Minnesota, who led the study.

“IVF can be a physically, financially and emotionally draining process for couples, and use of frozen sperm eliminates the pressure of obtaining sperm on a specific day and unnecessary risk to the woman due to ovarian hyperstimulation “ added his colleague, Alan Thornhill.

The Mayo team reviewed 2,039 attempts at IVF, in which egg and sperm are allowed to join in a lab dish and the resulting embryos are transferred into the woman.

They measured both the pregnancy rate and successful live births and found no differences.

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