You can't test for everything, and when something is GRAS because it is eaten in a number of natural foods already, you don't find added concerns until later.
I've gone through multiple five pound bags of erythritol over the years, and have seen no issue; however, I have chosen to migrate to allulose, in its place.
Thanks for the clarification. Funny, though, I donated a whole box of Stevia sweetener to the Food pantry that was mixed with the Erytherol (sp?) based upon a previous post of yours. ;) Hadn’t even opened it or used it. Costco.
I use local Honey in tea, (and our homemade Maple Syrup is good too; especially in a more robust tea mix) but I will use refined (GASP!) sugar in baking.