This type of result would show that the animals genotype included a percentage of interspecific DNA.
This is a contribution I had not thought about,
Imagine the revelations!
I expect that a pertinent and useful data base would have to be built first. This would entail the cooperation and contribution of a great many Field herpers as well as notable owners of captive collections. Here I refer to zoos et. al.
And, since human DNA can be typed from oral swabs, it seems that the best technology already exists that could be extrapolated for snakes. A small blood sample can be easily had from lizards by snipping a nail and collecting the blood. But, how is the non-technologically trained snake owner going to get a blood sample from a snake? That is where I think the oral swab would be appropriate. As regards the utility of hair samples from mammals; how about bits of the shed skin?
There already is a service for bird owners where nonsexually dimorphic birds can be sexed by sending in a small sample to a lab. All one does is request the sample medium, supplied free from the lab. Then, collect the sample, either a blood feather or blood from a clipped nail, and send it back to the lab with the fee. Only 20 years ago these birds could only be sexed via laparoscopic viewing of the gonads. This meant surgery and only breeders bothered to have it done.
I wouldn't expect the average "pet" snake owners to be the largest group of clients. Breeders, conservationists, zoos, veterinarians, Field herpetologists, and universities would probably be the dominant clients. There is no reason that the typing and data base couldn't be initiated at universities using graduate and undergraduate research programs.