DNA testing of animals was a natural off-shoot of laboratories doing other DNA testing and any lab that has diverged into animal testing has been in the business long enough to enjoy a reputation in their primary testing business, so, in answer to your question, yes Avian BioTech is safe & reliable.....
I have always had my birds tested using plucked feathers, where clipping toenails too short is painful to the bird.....you can always turn out the lights, firmly grab several feathers from the bird's back or chest & give a sharp yank.....the bird usually never feels the feather loss.....
Good luck.....