Test Overview
Test Methodology
LC-MS/MS
Reference Range *
0 - 5 years: 120-510 mcg/g creatinine; 6-16 years: 70-330 mcg/g creatinine; >16 years: 30-200 mcg/g creatinine
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
Days Set Up
Tuesday, Thursday
Analytic Time
4 - 9 days
Soft Order Code
NMH24
Laboratory
Sendout
Reference Laboratory
Mayo NMH24
Section
Special Testing
Specimen Requirements
Collection
Patient Preparation: Patient must not be taking monoamine oxidase inhibitors (MAOIs) or aminoguanidine as these medications increase N-methylhistamine (NMH) levels. Collect urine for 24 hrs. Aliquot and send to Specimen Processing refrigerated
Normal Volume
5 mL aliquot urine
Minimum Volume
3 mL aliquot urine
Additional Information
Test performed by Mayo Clinic Laboratories
Billing
CPT Code
82542