Clinically divided into the male sexual dysfunction and sexual function of the normal two categories, the latter based on the results of semen analysis can be further divided into azoospermia, oligospermia, asthenospermia, glanzmann sperm normal sperm count and infertility . As in recent years on human reproductive issues, as well as men to raise awareness of the rapid development of scientific research, the discovery of male infertility rate gradually increased, scientists have been caused by men of great attention.


At present, to determine whether the fertility of men, many laboratories are using 50 years ago by the WHO guidelines. It provides "normal" samples of sperm per milliliter of semen should be at least 20 million sperm with, and at least 50% of sperm activity.

University of Rochester Medical Center's obstetrics and gynecology, director David Guzick and his colleagues on the WHO standard objection: We have to introduce such a vague concept to replace the existing "fertility and infertility," the absolute concept, that is, between the two in this There is a "eliminating the color zone" area.

The researchers believe that a man in a gray area is characterized by, when the per milliliter of semen in the rough sub-count for 13.5 million and 48 million hours, of which 32% ~ 63% of sperm activity, and 9% ~ 12 % uniform appearance of the sperm, and normal sperm shape of the oval should be.

Guzick said that the number of sperm that is lower than the gray areas of infertility, sperm count higher than the area that is out there when fertility. Expert review of the study on the above-mentioned study found that a different view.

Larry Lipsyultz said: When to use it to try to understand what is and what is male infertility male fertility, especially for patients, "the study do not have complete information available." Guzick and his colleagues provided the number of sperm that is, it is difficult to distinguish who is who without fertility and fertility.

Lamb said that the study may be a preliminary evaluation of the male doctors were "very useful." In her view, Guzick and others on the global use of the WHO to improve the basic standards. However, this standard is not precise formulation of the scientific method. However, Lamb and Lipshultz agreed Guzick and his colleagues used the semen analysis is a screening tool only and should not be completely sure of the method of fertility. They think that this is no substitute for full inspection of Urology experts.

Lamb said: "semen analysis in the evaluation of male infertility is a very important and can give problems in some of the proposals put forward. But not as a diagnosis of infertility."

Lipshultz said: "The sperm count is not very important. More sophisticated test is necessary." He believes that a more sophisticated analysis of the sperm so that the ability to evaluate the egg fertilization.