The absence of a male partner or severe male infertility are the main causes as to why a single person or a couple starts a fertility treatment using donor sperm.
Necrospermia is a male fertility problem characterized by the presence of dead sperm in the ejaculate. Necrospermic men, however, are able to have biological offspring thanks to assisted reproductive technologies.
Cryptozoospermia or cryptospermia is a sperm pathology that may lead to male infertility and is characterized by a low sperm quantity. Actually, it causes the same symptoms as oligozoospermia, but more severely.
It consists of an alteration within the sperm shape, in which more than 95% of sperm have an strange morphology, leading thus to male infertility because of an sperm factor.
It is necessary that those men desiring to become sperm donors meet a series of strict criteria in order to be accepted as donors, ensure quality and, above all, prevent disease transmission.
To diagnose male infertility a seminogram is conducted. One of parameters evaluated is the concentration or amount of spermatoza found in the ejaculate.
Men whose sperm moves with difficult suffer from a condition called astenozoospermia, which can cause male infertility.
There are many men that suffer from male infertility. The classical test to evaluate their fertility is the sperm analysis; however, there are several parameters that can evaluate the sperm that are not studied, which means there are other ways of detecting male infertility.
One of the first fertility tests consists of carrying out a seminogram to evaluate the male fertility state and his reproductive capacity.
Sperm fragmentation may cause male infertility, preventing natural pregnancy.