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Overview :
The total number of normal, motile sperm in an ejaculation
can be used to assess a man's fertility.
total motile functional sperm =
= (volume in mL) * (sperm density) * (per cent motile) * (per
cent normal morphology)
Interpretation:
• normal is > 40,000,000 per mL
Infertile males may show:
(1) reduced
volume (< 3 mL)
(2) reduced
motility (< 25%)
(3) reduced
numbers (< 20,000,000 sperm per mL); however, count alone is not a
determinant, since males may be fertile with low counts
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