My understanding is, you can get a blood test, and it's probably going to come back positive, but that doesn't mean the snake has IBD. It just means they're doing a trial on these blood tests, and they're all coming back positive. lol

Someone with more information, feel free to correct me if I'm wrong, but when I discussed the possibility with my vet, that's what he found. The blood tests aren't worth the money because a positive test doesn't mean the snake is infected with IBD. It would be really nice if we could get new animals coming into our collections a simple blood test to check for the big bad viruses, but unfortunately, that day is not yet here.