you want to donate to the red cross?
A noble thought but its not anonymous is it? You give your name, address, maybe even social security number....
.....then you donate your dna sample to a federally funded institution.
You know what I'd do with your dna if I was the govt? Save it, profile it, then when you screw up, they can run your sample through the system and convict you based on your previous desire to make $40.
Its the worst $40 you will ever make.....