Sperm Freezing

Sperm freezing, also known as sperm cryopreservation, is a fertility preservation option for individuals who wish to preserve their sperm for future use. In Hong Kong, it can be stored for up to 10 years, or until the man is 55 years old for cancer patients.Sperm freezing may be considered by:

1. Men who are diagnosed with a medical condition that could affect fertility, such as cancer or a genetic disorder, and need to undergo treatments that may negatively impact their fertility.
2. Men undergoing fertility treatments, such as IVF, who produce a large number of sperm and wish to preserve their sperm for future use.
3. Men who are planning to undergo gender reassignment surgery and wish to preserve their fertility before starting hormone therapy.
4. Men who work in hazardous occupations or are at risk of injury that could affect their fertility.

Sperm Freezing Process

1. Semen Collection: Sperm is collected through masturbation into a sterile container. Alternatively, sperm can be collected surgically by a urologist.
2. Semen Analysis: The sperm is analyzed to determine the quality, quantity and motility of the sperm.
3. Sperm Preparation: The sperm is washed and treated with a cryoprotectant solution to protect the sperm from damage during the freezing process.
4. Freezing: The prepared sperm is then frozen using a process called slow freezing or vitrification, in which the sperm is rapidly cooled to -196°C to prevent ice crystal formation and damage to the sperm.
5. Storage: The frozen sperm is stored in liquid nitrogen until it is ready to be used.
6. Thawing: When the man is ready to use his frozen sperm, it is thawed, and the best quality sperm is selected for use.
7. Fertilization: The thawed sperm is used to fertilize the woman's eggs in a laboratory setting using a process called intracytoplasmic sperm injection (ICSI).

It is important to note that the success rates of sperm freezing vary depending on multiple factors, including the quality and quantity of sperm, as well as the freezing and thawing process. Sperm freezing is not a guarantee of future pregnancy, but it can increase the chances of conception in the future. It is important to consult with a qualified medical professional who can assess your individual situation and provide recommendations based on your medical history and fertility goals.