Post Date December, 03 2023
Routine semen examination is an important standard for determining whether a man is infertile, but many male friends are eager to know the results after receiving the semen routine examination report, but cannot judge from the obtained values. So, here we will explain the meanings of various indicators in the routine semen examination items.
1. Semen volume
A normal male should produce 2-5 milliliters of semen each time. If it is less than 1 milliliter, it can have a certain impact on fertility. If it is less than 0.5 milliliters, it is often more likely to cause infertility.
2. Liquefaction time
Whether semen can liquefy can determine infertility. The newly discharged semen is gelatinous, but usually liquefies within 20-30 minutes at room temperature. If the liquefaction time is prolonged, it is usually considered to be caused by low prostate secretion function, which can affect sperm activity.
3. sperm motility
Under the microscope, the sperm motility can be divided into four levels: Level A is fast straight forward movement; Level B refers to slow or undirected forward motion; Level C refers to non forward motion; Level D is inactive. If the sperm motility is Grade A ≥ 25% or A+B ≥ 50%, it is generally considered that it has no effect on fertility.
4. Sperm density
The normal sperm density of semen ranges from 20 million to 60 million per milliliter. If the sperm density is normal but the semen volume is too low, resulting in a low total sperm count, it can cause low fertility; On the contrary, if the total number of sperm is normal and the semen volume is too high, resulting in a decrease in sperm density or even below 20 million per milliliter, it can also lead to a decrease in fertility.
5. Sperm morphology
Abnormal sperm morphology in normal semen can reach 30% -40%, and if the sperm deformity rate is greater than 70%, it can cause infertility.
6. Acidity and alkalinity (pH value)
The pH value of normal semen is 7.2-8.0. When pH<7.0 or>8.0, sperm motility can be affected, which is also the main cause of sperm death.
The main purpose of semen examination is to understand the function of testicles in generating sperm, the function of various accessory gonads in promoting sperm maturation, and their secretion function. Only semen analysis can accurately assess male fertility and provide reliable evidence for the diagnosis of male infertility, other reproductive system diseases, research on male contraceptives, and forensic medicine.
Before conducting a semen test, the first step is for the sperm to have sexual intercourse for a period of time. Under the age of 40, sexual intercourse should be prohibited for 3-5 days, while over 40, sexual intercourse should be prohibited for a week, and there should be no ejaculation during this period. Semen examination should avoid periods of poor health, such as colds, fever, or heavy drinking, as it is prone to oligospermia or dead sperm. Only by paying attention to the above items can semen examination be more accurate.
(Intern Editor: Cai Junyi)
