From: Excretion of urinary histamine and N-tele methylhistamine in patients with gastrointestinal food allergy compared to non-allergic controls during an unrestricted diet and a hypoallergenic diet
Urinary histamine (UH) [μg/mmol creatinine x m2BSA]
Control group
Gastrointestinally mediated allergy (GMA)
>1.67*
13
50
≤1.67*
75
62
Total
88
112