Gluten free diet blog

my son had a chicken nugget from McDonald’s on Tuesday at11:00. He had a small crying spurt Tuesday night near bedtime (buthad fallen off a chair a few minutes before… cried right away,calmed, then cried again for a few minutes). Other than that, wenoticed no change. He had his best ABA session ever yesterday(Wednesday), according to his therapist. Then today, he had a veryunusual meltdown at 10:00 this morning about Barnyard Bingo (when histherapist put it away, he went nuts). Hard to redirect, which isn’tlike him. He was also incredibly distraught when they came in fromtheir walk and he discovered he had green marker on his hand. Hescreamed at the top of his lungs, shrieking repeatedly, with tears.

The only other thing that’s been different is I changed from Welch’sand Safeway white grape juice to Archer Farms brand from Target. Theingredients look exactly the same, but the Archer Farms brand is muchdarker in color. Coincidentally (or not), when he began an awfulbedtime screaming behavior for over a week and screaming when we’dleave the car, I’d also been using that juice. I stopped the juice,started melatonin, addressed the behaviors through therapy, and he gotbetter. Now the juice again (started it three days ago), and now he’sincredibly fragile and irritable again. Would it possibly take threedays to see the effects of the juice, if that’s what’s causing this?

What’s the best way to test the juice, take it away, see if he getsbetter, then try it again? Or keep giving it, see if he gets better,then I’ll know it’s not the juice? And how do I tell with the gluteninfraction? Can it take nearly 48 hours to see the effects of thatsmall amount of gluten?