| Urine histamine < 0.8 umol/24h
Urine 1-methylhistamine < 1.5 umol/24h |
Histamine is a mediator of the allergic response. Histamine release causes itching, flushing, hives, vomiting, syncope, and even shock. In addition, some patients with gastric carcinoids may exhibit high concentrations of histamine.
Specialist Biochemistry
MHIS
Urine sample to specialist chemistry freezer.
Frozen 14 days
Histamine metabolites
Methyl histamine
N-methyl histamine
6 weeks
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