Abstract
This report describes the development of a rapid and extremely sensitive radioactive assay for histaminase activity. The assay is based on the reaction of aminooxyacetic acid with the primary histamine metabolite [imidazole acetaldehyde (IA)] in basic solution, followed by extraction of unreacted histamine. The radioactivity remaining in the aqueous phase due to IA and its potential metabolite (imidazole acetic acid) is determined.
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