a celiac test is not likely to be very accurate at this age—–babies and young kids don’t always produce the antibodies until they are older.
have they recommended testing, such as an endoscopy, a ph probe? they’re not gaining weight and they are throwing up way too much.
have they suggested taking them off all solids and putting them neocate only?
i don’t know if my twins were much bigger than yours at that age. they have always been so small and thin. they were diagnosed with celiac 1 1/2 years ago. i don’t THINK they had it when they were little, but no one ever thought to check, either.