I did mine with a mail in kit at research associates laboratory. http://www.vetdna.com/test-type/reptiles - I tested for ranavirus and chytrid. I got the swab kit from my exotic vet. If you can't release them now though, due to weather (they're all hibernating up here in WI already) I probably wouldn't after winter. I'd be worried that they would have trouble learning how to find food in the wild. However, they do have a pretty strong instinct so maybe it wouldn't be an issue at all.