You are in Women, Men, Aging . A man who is evaluated for infertility by a urologist will usually be asked to produce one or more semen samples for analysis. A semen analysis is a standardized technique for evaluating its fertilizing potential. Semen is made up of sperm, produced by the testicles, and transport fluid, produced by the seminal vesicles and prostate.
All semen is initially relatively thick, and liquefies after ejaculation.
The process of liquefying helps release the sperm to begin their journey toward an egg. Occasionally, thick semen is a symptom of prostatitis, an infection in the prostate gland. A urologist can easily diagnose and treat this condition. If semen remains too thick and impairs fertility, artificial insemination may be required. Semen volume is also only rarely a predictor of fertility.