Recipient(s) will receive an email with a link to 'Semen Analysis' and will have access to the topic for 7 days.
Subject: Semen Analysis
(Optional message may have a maximum of 1000 characters.)
A complete semen analysis measures both macroscopic and microscopic characteristics of a semen specimen, all of which can provide clues in the workup of male infertility.
Reference ranges (WHO):
Volume: 1.5 mL (95% CI 1.4–1.7)
Concentration: ≥15 million/mL (95% CI 12–16)
Total sperm number (count): 39 million per ejaculate (95% CI 33–46)
Progressive motility: 32% (95% CI 31–34)
Total motility (progressive + nonprogressive): 40% (95% CI 38–42)
Vitality: 58% live (95% CI 55–63)
Morphology: ≥ 30% normal forms (WHO criteria), or
≥ 4% normal forms (“strict” Tygerberg criteria)
Primary test for male factor infertility in the workup of infertility in a couple
Confirmation of the effectiveness of vasectomy (sperm concentration alone)
No upper limit defined
Testicular disease (primary defects)
Posttesticular defects (disorders of sperm transport)
Hypothalamic–pituitary disease (secondary hypogonadism)
Minimum specimen volume for microscopic analysis is 0.1 mL.
Highly viscous specimens may affect accuracy of concentration results.
A minimum of two analyses, preferably 1 month apart, are recommended to correct for cyclical variation in sperm concentration.
Specimen collection should occur within a window of 48- to 72-hour abstinence to maximize average concentration of live cells.