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The only way to determine if a man or woman is sterile is to have them tested. There are a series of tests that can be done on a sample of the man's sperm to determine if he is sterile.

As a rule of thumb this is what a man needs to be considered fertile:

2ml or more of semen

2 million sperm per ml of semen

50% or more of the sperm must be correctly formed

50% or more of the sperm must have good motility

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13y ago
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Q: How can you tell if he is sterile?
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