Where do you send them? Do they test coons ?
Frozen carcasses ?? or how do you send it in ?
Varies by state just which dept handles it and how. But you local board of health should be able to point you right.
Here in Georgia it's handled through the county animal control. You submit the live animal to them, they are to dispatch but in practice I've dispatched. The idea is fresh not rotten or frozen.
They then forward it to UGA for testing.
But it is only required for known human contact.