Sperm freezing and storage procedure is one of the infertility treatment provided by many of the infertility clinics. In this procedure, the sperm cells are frozen to preserve them in future use in IVF or in sperm donation process. The sperm can be successfully live for almost 40 years with the help of this frozen process. After collecting the sperm sample, it is placed on a warming block maintained at 37°C to liquefy. These sperm cells will be kept in liquid nitrogen at -196 c and the quality of the sperm is also maintained with the sperm freezing process.
Sperm freezing recommendations
- Chemotherapy or radiation therapy.
- Certain types of pelvic or testicular surgery.
- High-risk occupations or sports.
- Diabetes, which may cause erectile difficulty.
- Male being away from home on day of assisted reproductive treatment.
Sperm freezing process
In the first visit, doctors will perform blood tests for hepatitis B, hepatitis C and HIV, because there is a risk of transferring these diseases to female partner or unborn child. After the complete of tests, the male partner needs to provide semen sample from his place and need to submit to hospital within one hour. Based on the situation, the freezing sample count is differing from one another. Most of the men freeze between two and five samples.
The limits and the storage time of the sperm are generally 10 years. The period of storage is extended in some critical conditions and the maximum storage period for sperm is 55 years. The advanced method of freezing sperm is known as vitrification. This process helps results optimal sperm motility.
How sperm freezing is performed
After collecting the sperm sample, it is placed on a warming box by maintaining 37°C to liquefy. Semen sample is mixed in 1:1 ration to make it survive in the freezing and storing process. These samples are frozen in liquid nitrogen vapors and they are stored in special liquid nitrogen containers.