Sperm production problems can result from hormonal problems, testicular failure, or varicocele, or varicose veins in the testicles.
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Male Infertility Articles
Obstructive azoospermia refers to no sperm in a man's semen, as a result from problems with sperm delivery. Obstructive azoospermia accounts for around 40 percent of azoospermia cases. Most commonly, obstructive azoospermia results from previous vasectomy, but there are other causes.
Causes of Obstructive Azoospermia
Male factor infertility plays a role in about approximately half of all cases of infertility. To understand what might be causing a couple's infertility, the male partner should undergo a male fertility work-up with a semen analysis. Because a man's sperm count and semen consistency can vary from day to day — and some conditions can also have a temporary effect — a semen analysis to determine fertility should be performed on at least two samples, at least seven days apart over a period of two to three months.
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In order to analyze the sperm, a sperm analysis can be done several times to ensure accuracy of the test results. If there is a reproductive issue with the male, time is a dependent factor on prospective treatment for the couple, explains Dr. Seth Levrant who participates in the clinic Partners in Reproductive Health in Munster, IN and Tinley Park, IL.