1, common semen test items
Routine semen examination is an important method to evaluate male fertility, and it is also an experimental basis for diagnosis and curative effect observation of andrology diseases. It takes about 30 to 40 minutes for men's semen routine examination to get results, and it takes about one hour for semen analysis to get results. Men abstain from sex for five to seven days before the examination, and prenatal eugenics examination recommends that both husband and wife check at the same time.
general inspection
(1) Semen volume: 2 ~ 5ml of semen is discharged by a normal person at a time.
(2) Color and transparency: The normal semen just injected is milky white or grayish white, and it is translucent milky white after liquefaction, and it may be pale yellow if the semen is not discharged for a long time. Bright red or dark red blood semen can be seen in inflammation of reproductive system, tuberculosis and tumor, and yellow purulent semen can be seen in seminal vesiculitis or prostatitis.
(3) Viscous liquefaction: Normal fresh semen is a viscous colloid several seconds after discharge, and begins to liquefy under the action of fibrinolytic enzyme in semen 30 minutes later. If the viscosity decreases like rice soup, it may be that the number of sperm decreases, which is seen in inflammation of reproductive system, and semen does not coagulate due to obstruction or injury of seminal vesicle; If semen does not liquefy after 1 hour, it may be caused by inflammation destroying fibrinolytic enzyme, such as prostatitis. Non-liquefaction of sperm will inhibit sperm motility and affect pregnancy.
(4) pH: pH value. Normal semen is weakly alkaline with a pH value of 7.2 ~ 8.0, which is beneficial to neutralize acidic female private secretions. PH less than 7 or greater than 8 will affect sperm activity and metabolism, which is not conducive to pregnancy.
microscopic examination
(1) Sperm survival rate: 30 ~ 60 minutes after ovulation, the normal sperm survival rate should be 80% ~ 90%, and the decline of sperm survival rate is an important cause of infertility.
(2) Sperm motility: refers to the state of sperm motility, and also refers to the quality of motile sperm.
(3) Sperm count: The sperm count of normal people is 0.6×10/2 ~10.5× 0.012/L, which is equivalent to a total of 400×106 ~ 600×/kloc. When the sperm count is 20× 106/ml or the total number of sperm discharged at one time is 100× 106, the number of sperm decreases and exceeds the pregnancy limit, resulting in infertility.
(4) Sperm morphology: In normal semen, abnormal sperm should be less than 10% ~ 15%. If the number of abnormal sperm in semen reaches 20%, it will lead to infertility, which may be caused by varicocele, toxic metabolites in blood and lead pollution. Or abnormal sperm morphology caused by high dose radiation and cytotoxic drugs.
2. The normal length of Tintin
Tintin's erection is a man's natural instinct, but it contains a lot of interesting knowledge and phenomena. Recently, an article published in the American Journal of Human Science was published by an American urologist, revealing "Tintin's Secret".
The article points out that there are two kinds of men's Tintin erections. One is erection at night, which is as normal as breathing and sweating. In 24 hours a day, night is the peak of Tintin's erection. According to the survey, adolescent boys can erect about 6 times a night, each time lasting about 20-30 minutes; It is more common in young adults, with an average erection of 90 minutes per night 1 time; Gradually decrease after middle age. After the age of 60, healthy elderly people still have 1 erection every night.
Another kind of erection comes from physical or psychological sexual stimulation, such as the stimulation of the opposite sex, the stimulation of sexual content in movies and books, etc. , which is the erection before ejaculation. It is estimated that men have an average of 7200 erections and ejaculations in their lifetime. Among them, masturbation can ejaculate 2000 times on average.
Under normal circumstances, the duration of Tintin's erection ranges from a few minutes to more than an hour. If the erection time is too long, more than 4 hours, and the erection is limited to Ding Ding sponge, it is abnormal erection of Tintin.
The report also pointed out that the average length of male Tintin was 8.9 cm when he was not erect, while the average length after erection was 13 cm. When taking a bath, almost all men's tintin will shrink a little. According to records, the shortest Tintin in human history is only 1.6 cm, and the longest is 28 cm.