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Sperm analysis (abnormal sperm density)

Authoring team

NICE state normal values as:

  • sperm concentration: 16 million spermatozoa per ml or more (95% CI 15 to 18)
  • total sperm number: 39 million spermatozoa per ejaculate or more (95% CI 35 to 40)

Reduced sperm count is generally idiopathic. However it may be due to defective spermatogenesis or an incomplete obstruction.

Reference:

  1. NICE (March 2026).Fertility - Assessment and treatment for people with fertility problems

 

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