Can men with low sperm survival rates get pregnant

The normal reference value is greater than or equal to 75%, that is, the percentage of viable sperm, usually determined by staining techniques, such as eosin staining, dead sperm cell membrane damage can penetrate dye, and viable sperm, but immobile sperm is not stained. In fact, the probability of pregnancy is not only related to the survival rate of sperm, but also closely related to the motility and activity rate of sperm. That is, although sperm are alive, if they do not move in situ or their mobility is very weak, they cannot cause pregnancy. Generally, the sperm activity rate should be combined, that is, the number of sperm moving forward quickly or slowly should be greater than or equal to 50%, so as to increase the probability of pregnancy.