Sperm activity check refers to the observation of sperm movement in freshly discharged semen under a microscope. It is usually divided into four levels. The low sperm activity or the number of inactive sperm is one of the causes of male infertility. Decreased activity can also be seen in varicocele, reproductive system infectious diseases, and the application of anti-malarial drug estrogen, chemotherapy drug nitric oxide mustard.

Basic Information

Specialist classification: male examination check classification: semen and prostatic fluid examination

Applicable gender: whether the male is fasting: not fasting

Tips: Before collecting semen specimens, you must abstain from sex for 3 to 5 days, generally no more than 5 days. Normal value

Of the freshly discharged semen, more than 50% of the sperm moves forward (ie, grades a and b account for more than 50%), and more than 25% of the sperm do a rapid forward movement (ie, grade a is more than 25%).

Clinical significance

1. The relationship between sperm motility and fertilization is very close. Sperm activity is low, it is difficult to reach the fallopian tube or unable to combine with the egg and can not complete the fertilization process. Insufficient sperm count in class A activity also affects fertilization rate. If continuous examination, sperm survival rate is less than 40%, and C-class active sperm, it may become one of the reasons for male infertility.

2, sperm motility decreased, seen in:

1 varicocele, due to poor venous return, resulting in elevated temperature in the scrotum and testicular tissue hypoxia, so that sperm motility decreased.

2 Non-specific infection of the reproductive system and the use of certain antimetabolites, antimalarials, estrogens, nitrogen oxide mustard, etc.

Low results may be diseases: varicocele, male infertility precautions

(1) Before collecting semen specimens, it is necessary to abstain from sex for 3 to 5 days, generally not more than 5 days. The abstinence time is too long, the amount of semen increases, and sperm motility decreases.

(2) Because the number of spermatogenesis varies greatly during the day, it is not possible to make a diagnosis according to the results of one test. Generally, it should be checked once every 1 to 2 weeks, and continuously checked 2 to 3 times.

(3) Specimens should be packed in clean and sterilized plastic test tubes and covered, but latex or reverse condoms should not be used for specimens, because the talcum powder in the condom can affect sperm motility. After the semen is collected, it should be insured immediately for inspection. Especially when the temperature is relatively low, the container of the specimen should be placed in the underwear and transported for inspection. The inspection time should not exceed 1h.

Inspection process

The semen to be discharged is completely liquefied, and after thorough mixing, an appropriate amount of the specimen (about 8 μl) is dropped on the glass slide, and a cover glass is added, and after standing for about 1 minute, it is observed under a microscope.

Not suitable for the crowd

There are no taboos.

Adverse reactions and risks

This check will not cause complications or harm.