Semen analysis

Analysis of seminal fluid should be the first step in the investigation of infertility since, in the absence of sperm, investigation of the female is futile.

Procedure:

• 3 days abstinence from intercourse
• collection of specimen of semen in a sterile plastic container after masturbation
• examine within 2 hours

NICE state that normal results are:

• Semen analysis
  • the results of semen analysis conducted as part of an initial assessment should be compared with the following World Health Organization reference values:
    • semen volume: 1.5 ml or more
    • pH: 7.2 or more
    • sperm concentration: 15 million spermatozoa per ml or more total
    • sperm number: 39 million spermatozoa per ejaculate or more
    • total motility (percentage of progressive motility and non-progressive motility): 40% or more motile or 32% or more with progressive motility
    • vitality: 58% or more
    • live spermatozoa sperm morphology (percentage of normal forms): 4% or more

Reference:

• NICE (February 2013).Fertility - Assessment and treatment for people with fertility problems