N-methylhistamine in 24 hour urine

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Indications

Clinical significance

  • remains elevated in urine for many hours after anaphylaxis
  • reflects overall levels of released histamine

Specimen

More general terms

Additional terms

References

  1. Loinc
  2. ARUP Consult: Anaphylaxis The Physician's Guide to Laboratory Test Selection & Interpretation https://www.arupconsult.com/content/anaphylaxis