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Semen analysis of male reproductive examination

Definition-semen analysis

Semen analysis refers to the laboratory testing of semen to assess male fertility, which can detect male fertility problems. An accurate diagnosis can provide opportunities to improve natural fertility or choose appropriate treatments.



In the cases of infertile couples, 20% of male infertility is considered the only cause in the case, and in 50% of infertility cases (usually both male and female problems), male infertility is both It is also the cause of infertility.



Sperm test content

The analysis usually includes the following:

Sperm count is the total number of sperm in the sample;



Sperm concentration is the number of sperm per ml, the normal concentration is at least 15 million sperm per ml of semen;



Motility, the number of sperm swimming. Ideally, it should move 40% or more. This is called the Total Exercise Count and is considered to be one of the best predictors of male infertility;



Morphology or shape, at least 4% of sperm appear to be normal. This means that about 96% of people may have an abnormality, but the appearance does not mean that the genetic material inside is damaged;



Vitality refers to the percentage of live sperm in semen. At least 58% of sperm cells should be viable.


Specific content of semen analysis

The semen around the sperm can be checked as follows:


Semen volume, the normal volume is at least 1.5 mL

Half-fructose concentration, if the concentration is low, it indicates blockage or blockage

pH, the acidity of semen should be between 7.1 and 8.0. Abnormal pH will affect sperm movement.

If there are more than one million white blood cells per milliliter of semen, there is an excess of white blood cells (this may indicate infection).

Liquefaction, the time it takes for a liquid to change from a thick gel to a liquid. This should be about 20 minutes.


Semen samples provided

Whether at home or in the laboratory, you can get a semen sample by putting semen into a sample cup in a self-service manner. It is generally recommended not to ejaculate for two to three days before the test to produce an ideal sample.



Prolonged abstinence may produce samples with reduced sperm motility (movement). The quality of semen samples can be greatly affected by the method of collection and storage. Following all the instructions provided is very important to ensure the best results.



Pay attention to semen analysis

It is worth noting that semen analysis is not a perfect assessment of male fertility, and normal values may vary. This is why men should have at least two semen samples to ensure that the examination results are accurate. This means that the results of semen analysis are not always related to pregnancy outcomes. Value fluctuations are also common. The parameters can be regarded as guidelines that help guide the detection.


parameter
World Health Organization 2010 Standard
Semen volume
More than 1.5ml
Sperm density
15 million sperm per milliliter
Sperm motility
32% or above
Sperm morphology
4% or above
Sperm activity
58% or above
White blood cell planting
Less than one million




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