This is not a SFW instance. NSFW communities will be tagged, and efforts will be made to keep SFW communities clean, but proceed at your own comfort level.
Urine contains DNA, but the amount of DNA that can be found in urine is much less than what other sources like blood or saliva can provide. But if urine is the only available source, a DNA extraction can still potentially occur.
That’s funny and not true.
https://dnacenter.com/blog/does-your-urine-hold-dna-learn-what-info-your-urine-holds/
You’re speaking like someone who jerks off every twenty minutes.
Ya gotta go every 19 minutes to prevent DNA gaps in your urine.
Those are rookie numbers.