Is barley groats high in histamine liberators?

Serving size, prep, and portion notes for barley groats

Barley groats are barley in its least-processed edible form: only the inedible outer hull has been taken off, leaving the bran and the germ on the kernel. That is what separates them from pearl barley, which has been tumbled against abrasive surfaces until the bran is polished away. Groats take forty minutes to an hour to soften and stay firm and chewy, and they are the version that turns up in whole-grain salads, soups and grain bowls. Their trigger profile is unusually narrow. This is a food with exactly two problems: it is a gluten grain, so coeliac disease rules it out outright, and it is high in fructans and rated high FODMAP. Outside those two, we grade barley groats clean across the board, on histamine, histamine liberation, salicylates, oxalate, nickel, lectins, glutamates, tyramine, sulfites and dairy protein, and it grades well on small-intestinal fermentation too. If you are chasing something other than gluten or FODMAPs, the whole barley kernel is rarely your culprit.