Can a low sperm count lead to pregnancy?

Patient's question:

Please ask if your partner has a small amount of semen after sex, will it cause pregnancy? Urgent reply needed

Doctor's answer:

Sperm is produced by the testes. Seminal fluid is secreted by the prostate gland, seminal vesicles, and bulbourethral glands. Seminal fluid contains fructose and protein, serving as nutrients for sperm. Additionally, seminal fluid also contains prostaglandins and various enzyme substances.
Normal semen appears milky white or light yellow, with the number of sperm per milliliter typically ranging from 60 million to 200 million. Over 60% of the sperm are motile. Abnormal sperm should account for less than 10% of the total. Under room temperature, sperm motility can last for 3-4 hours.
Does a low volume of semen affect pregnancy? In fact, it's more of a relative probability issue. Seminal volume is not the key factor; the key is the sperm count and quality per milliliter. As long as the sperm quality is not a problem, pregnancy should still be possible.