How long will the frozen sperm remain viable?
Sperm collects and freezes for later use for many different reasons. Sperm banks collect sperm from donors and freeze sperm for partners of the same sex and vapors with fertility problems who needed sperm donations. Many factors contribute to how long frozen sperm remains viable and time itself is not usually the main problem. The frozen semen will generally remain viable for a longer period of time as long as it is frozen properly to start and thaw and thaw again.
The initial sperm force affects the viability of frozen semen more than the length of time when it is frozen. Strong and healthy sperm will remain viable for longer than weak and unhealthy sperm. In addition, each person's sperm will respond differently to freezing; Up to 20% of men have sperm that does not strange well and which does not survive freezing. Once thawed, some sperm remain strong, while others can decrease in health and become less viable.
Although sciencesCi have been able to freeze sperm since the 1950s, modern methods were indeed developed only at the age of 60, so it is difficult to predict how long the properly frozen and stored sperm remain viable. Some experts recommend frozen sperm to be used up to 12 years, but for the best chances that it will be viable. At the beginning of 2000, a child was born with semen, which was frozen 21 years ago. Studies also indicated that children born of semen who were frozen seem to be as healthy as other children.
The Sperm Procedure Proceeds plays an important role while maintaining and viability of frozen sperm for future use. After extensive testing to determine the quality of sperm, it is divided and placed in bottles with a protective compound. The sperm must be gradually frozen at extremely low temperatures; Usually it starts in Vapor Liquid Nitrogen. Samples then move to long -term storage in liquid nitrogen tanks thatThey are at least -321 ° F (-196 ° C).
frozen sperm must be carefully thawed to remain viable. When the bottles are open, the room temperature must not be exposed for more than a few seconds before they are placed in a warm water bath at a body temperature - 98 ° F (37 ° C) - a few minutes. During the melting, the bottles must be completely immersed in the water to prevent significant temperature loss. After the frozen sperm is thawed, it is placed in an insemination device.