I believe the testing has been done on a few species, Argentine Boas among them I think, but I may be mistaken.

As far as the reply about the possibility of Kahl Sharp Amels producing a T positive, it is definitely proven negative.
It could happen, I suppose.
"Ultra Hypo" in corn snakes is on the same gene pair as Amelanism, and there is an intergrade, called "Ultramel" which looks like a T/ to me.

The part about the testing being expensive is purely hearsay, I haven't investigated the cost of such testing myself.
I did read that there was some of this sort of testing that had been done on snakes, but I can't recall where I read it, or by whom was the testing performed, it was years ago.
I reserve the right to be completely wrong.
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Jeremy J. Anderson
Gem State Reptiles
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