[aksss]

I assume that police departments will retain DNA from every sample they can get their hands on, just like fingerprints. You're in a DB at that point, and it's useful data (demonstrably). I'd be surprised if many police departments have a privacy policy, much less comply with it, regarding your rights after a DNA sample is taken, relative the auspices under which they collected it. Assume the worst if you're at all worried about your DNA being on file somewhere.

[Ovah]

I guess I could have been more clear. My question is about the lab side of things. Indefinite and indiscriminate data retention is definitely a problem although a different one.