system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] How does Batman deal with the problem of DNA?

Batman bleeds. A lot. Batman/Bruce sleeps around. A lot. When compared to the general population Batman's (therefore Bruce's) DNA is at countless crime scenes. He has children. He's even been cloned. Bruce has also been arrested, framed for murder and imprisoned. His DNA is surely on file. He's also been captured and unconscious around many a villain (some of them mad scientist types) who could easily have acquired is genetic material. 

My point is - how does he keep his identity secret when his genetic footprint is so clear to see by those inclined to look?
gpt
Would his DNA be on file?

He's very rich and powerful, has little interest in following the law, and was after all found not guilty every time he was arrested.

It would be relatively easy for him to make a few phone calls and get it removed (or hack the database if that doesn't work). The GCPD is notoriously both corrupt and poorly equipped, after all.

He'd only really need to worry if someone searches batman's DNA during that relatively short period before he can pull strings to remove it, or if a villain for some reason took Bruce Wayne's DNA specifically. Both rare enough he has a decent shot of avoiding it.