It seems like it would be fairly simple to determine conclusively whether or not female ejaculate contains urine. Just ask your wife/girlfriend to take a multivitamin an hour or so before lovemaking, and see if the fluid is yellow.
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What’s in female ejaculate? (25-Oct-2002)
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Not so fast. This is Science. First, you have to establish that eating certain substances only affects the urine, not the ejaculate. I.e., if it comes up “positive”, it doesn’t prove a thing.
As the column alludes to, proving what should or should not be in an unknown substance is tricky. If you don’t know what is (not) in it, how do you test for it?
In any event, surely (with the aid of appropriate lab equipment) one could at least test for urea, or similar compounds. I mean, if they can check for PSA, urea shouldn’t be so difficult, should it?
Contains urea: At least partly urine.
Doesn’t contain urea: Completely different from urine.