I' m not in Wisconsin, but here in Colorado you do take your deer/elk home with you. For CWD testing you cut the head off and they test it for you, after 4-8 weeks you get a letter in the mail letting you know one way or the other.

I hunt in a CWD unit here in Colorado and 2 1/2 years ago I had a elk test positve for CWD. Now if you think an deer testing positive is bad, just think about me boning an elk in the mountains, humping him out 3 miles to the road, in 5 trips over 2 days, then never even getting to taste his sweet flesh.