Trimethylaminuria, fish odour syndrome: a new method of detection and response to treatment with metronidazole

Abstract
Summary: Trimethylaminuria is an autosomal recessive disorder involving deficientN‐oxidation of the dietary‐derived amine trimethylamine (TMA). TMA, a volatile tertiary amine, accumulates and is excreted in urine of patients with deficient TMA oxidase activity. Treatment strategies for this condition are limited. We report a new stable‐isotope dilution method for rapid sequential analysis of TMA concentrations and the clinical and biochemical response to treatment with metronidazole.