Sending a bird to be tested for Mareks

[nab58]

Can anyone point me in the direction on how you send a bird to be tested for Mareks? We just lost our 5th bird Mareks symptoms and would like to send it to be tested.
I live in NW CT. We culled the bird today....do we freeze it? Do they need the head or just the body?
Thank you!

 

[azygous]

Refrigerate it. But you need to get it shipped overnight. Keep it chilled until you are ready to take it to the post office or other overnight shipping agent. If you have a foam cooler, use it as the shipping container.

When I had my necropsy, I decided to drive the two hours to the lab and deliver it myself.