Well shanagan, I had a long talk with Linda, and rolygate was on point when he said that one should be skeptical about trusting the word of someone at the end of the chain! I can't disclose details on others, but I'm fairly certain some who claim to not use certain ingredients do actually use them, although most likely without knowing it.
There is a little 2,3-Pentanedione in the Ice Cream flavors, but there is no Acetoin. I asked her if she would send me samples without 2,3-Pentanedione to test how they would work as a replacement for me, so hopefully that will be a success.
I've also been looking into getting tested (not me, my liquid), and once I can afford to I will do that.