1-methyl-4-imidazoleacetic acid

1-Methyl-4-imidazoleacetic acid (MIMA) is a stable metabolite of histamine that is produced by the oxidation of the primary metabolite, N-methylhistamine. Urinary levels of MIMA are commonly measured to evaluate histamine secretion, particularly in the context of systemic mastocytosis.

2-(1-methyl-1H-imidazol-4-yl)acetic acid (2-(1-methylimidazol-4-yl)acetic acid) is a plasma histamine derivative that is a biomarker for identifying lymphangioleiomyomatosis.