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A member asked:
Will cold tap water (with or without soap) very quickly or even instantly kill sperm, owing to osmotic shock?
A doctor has provided 1 answer
Spermicide ?: Tap water is definitely going to create an osmotic deficit when contacting living cells, but it is not sufficient to kill sperm effectively, so pregnancy is always a possibility. The only way to resolve this is to wait until the receiver of the sperm has a period. Obtain a serum (HCG) pregnancy test if she is "late".
Answered 9/13/2020
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