Figure 6From: 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 dietDistribution of individual urine methylhistamine (UMH) values during unrestricted diet in 56 patients with gastrointestinally mediated allergy (GMA) and 44 controls. The grey box represents normal values for UMH (mean ± 1 SD of controls).Back to article page