Incomplete liquefaction of semen may be caused by a lack of prostate enzymes. Liquefaction is the process by which semen becomes less viscous, i.e., it becomes more liquid in appearance. Liquefaction usually occurs after about 15-20 minutes.
An altered value of seminal liquefaction can affect the motility and concentration of spermatozoa, providing altered semen analysis results. Therefore, this alteration can cause problems in achieving pregnancy naturally.