However, in order to do so, you need far more than the 14 markers used by CODIS.
And again, most of those markers are completely irrelevant to any criminal proceedings. Even if you have, for example, a genetic predisposition for schizophrenia, that alone is insufficient to prove that you are violent or mentally incompetent.
And every bit of superfluous data that's collected increases storage, which increases costs and slows down search times. Nor could they afford the time or the equipment to check if a suspect has a genetic predisposition for colon cancer or hair loss.
To suggest that the police are going to test whether you have an increased chance of developing breast cancer is ignorant.To say that it is the same as a fingerprint is ignorant.