Severe weak spermatozoa is a common cause of infertility when the sperm is not as vigorous as it should be for conception. The quality of sperms can be shown in the laboratory test, and the condition can be judged by the quality of sperms. Severe weak spermatozoa is determined mainly by the results of semen analysis, which categorizes sperm quality into Grade A, Grade B, Grade C, and Grade D. This is according to the order of sperm quality from highest to lowest. Grade A sperm should have a motility rate of greater than 25%, A plus B greater than 50%, and A plus B plus C greater than 60% for normal sperm motility. Weak spermatozoa can be determined if less than 50% of forward-moving sperm (classes A and B) or less than 25% of sperm with class A motility are present. The Severe Weak Spermia labs are informative in determining the quality of a man’s semen and may help to slow down the further progression of Severe Weak Spermia in men. The results of this test may have some errors, and it is recommended to consult a medical professional when there are problems with sperm quality to get early treatment so as not to affect fertility.