1, healthy male, aged 22-45.
2. It is a voluntary humanitarian behavior for sperm donors to donate sperm.
3. Sperm donors must meet the health examination standards of sperm donors.
4. The sperm donor is fully informed of the purpose, rights and obligations of the semen supplied, and signs the informed consent form for sperm donation.
At present, many universities in Guangzhou have sperm donation propagandists in their schools, and many college students have joined the ranks of sperm donation. However, donating sperm is far from being as simple as imagined. Sperm donors not only have high physical requirements, but also have high standards, and about two-thirds of them have unqualified semen. Today, let's learn more about sperm donation.
1 95% of sperm donors are college students.
Sun Yat-sen University, South China University of Technology, Jinan University ... At present, many universities in Guangzhou have on-campus sperm donation propagandists. Tang Lixin, chief physician of Guangdong Human Sperm Bank, said that through various publicity, many college students (graduate students and doctoral students) came to Guangdong Human Sperm Bank located in Mei Dong Road, Guangzhou to donate sperm.
It is understood that up to now, more than 95% sperm donors in the sperm bank are college students. Director Tang said that college students are young and vigorous, and their semen quality is higher than other age groups, so they are the best sperm donors. According to the regulations of the Ministry of Health, the age of sperm donors is 22-45 years old. The Danish human sperm bank, the largest human sperm bank in Europe, stipulates that the age of sperm donation is 18-40 years old.
In recent years, due to the popularization of sperm donation, some people of marriageable age have also joined the ranks of sperm donation, and some university professors in their 40 s have also come to donate sperm.
2 The requirement of sperm donation is high, and only 1/3 semen is qualified.
Sperm donation, the sperm bank will conduct free physical examination and semen test for all applicants, and only those who are qualified can donate. Tang Lixin said that to donate sperm, there should be no systemic diseases and serious organic diseases, such as heart disease, diabetes, tuberculosis, liver disease, genitourinary system diseases, blood system diseases, hypertension, psychosis and leprosy. You should also have no long-term exposure to radiation and toxic and harmful substances; The degree of myopia shall not be greater than 500 degrees, and there shall be no color blindness or color weakness.
Tang Lixin said that in addition to high physical requirements, sperm donors are also required to have high standards of semen. Therefore, there are not many qualified people, and only 1/3 is qualified to donate sperm.
Although college students are at the peak of childbearing, their semen qualification rate is basically at this ratio, that is, only 1/3 is qualified. Tang Lixin said that unqualified semen does not meet the standards of sperm donors, which does not mean that its body and fertility are abnormal. This is like choosing an astronaut. Not choosing an astronaut does not mean that you are in poor health, mainly because the sperm bank has high requirements for the donor's sperm.
For example, the sperm concentration should reach 60 million /ml, and the sperm with vitality (linear movement) accounts for 60%; The normal form of sperm reaches 30%, that is, sperm has a head and a tail, and those who are "handsome" should reach 30%. Tang Lixin said that the final standard is 26% higher than that of foreign countries, which only require 4% normal sperm morphology. It can be seen that it is "rare" for men to reach the "storage" standard of semen.
Donation per person is limited to 15ml.
It is said that the sperm bank has certain subsidies for sperm donors, but as Chen, a top expert in the industry, said, it is not realistic to make money by donating sperm. Sperm donation subsidy only compensates the time and transportation expenses spent by sperm donors to participate in sperm donation.
The reporter carefully examined the process of sperm donation and found that the original sperm donation was not completed at one time. Because the amount of sperm donation must reach 15 ml, and the average person's ejaculation amount is only about 2 ml at a time, it takes almost 10 times to complete the goal, and the interval between each sperm donation is 5-7 days. Repeated blood tests are also needed to check whether there are infectious diseases. It basically takes half a year to complete the whole process of sperm donation.
Most importantly, after you have completed the semen index of 15 ml, you can't continue to donate sperm. According to domestic regulations, one person's semen can only be used for five women to conceive, that is, the ratio of 1:5, so there is no need to worry about the probability of two half-brothers meeting, falling in love and getting married.
There are still 20 thousand new qualified semen in short supply every year. There are about 20,000 qualified semen in Guangdong human sperm bank every year, but there is still a "famine". Tang Lixin said that there are 1 1 sperm banks officially operated in China, and the human sperm banks in Guangdong Province should meet the needs of Yunnan, Hubei, Guangxi and Guangdong provinces. Due to the increasing number of infertile patients, the demand for artificial insemination and IVF is increasing, so the demand exceeds the supply.
If you want to choose the donor of Gao Fushuai, you have to be more patient. Tang Lixin said that at present, when collecting semen, the sperm bank will also consider the height, education level, native place and blood type of the donor, but if you want to pick someone who is over 175cm tall, looks like Andy Lau and is a doctor, I'm sorry, it's not enough, so you have to wait in line.
For most people's fantasy that "excellent human sperm" will inherit excellent genes, Tang Lixin said that although heredity exists objectively, the degree of correlation between heredity and intelligence is still unclear. Moreover, even if children have excellent genes, will they succeed? I'm afraid it's wishful thinking
I hope my point of view is helpful to you!