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Labcorp Oklahoma, Inc.
Test Directory


Index:

N-Methylhistamine, 24Hr Urine

Order Name N-METHYLHI
Test Number: 3811100
Revision Date 12/12/2022
Test Name Methodology LOINC Code
N-Methylhistamine Level Urine
Liquid Chromatography/Tandem Mass Spectrometry 44340-8 
Creatinine Urine
Liquid Chromatography/Tandem Mass Spectrometry 2161-8 
NMH Creatinine Urine
Liquid Chromatography/Tandem Mass Spectrometry  
Collection Volume - Prompt
 
SPECIMEN REQUIREMENTS
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 5mL (3mL) Urine, 24-hour 24 hour Urine Container Refrigerated
Instructions Specimen Type: Plastic Urine Container
Specimen Storage: Refrigerated
Specimen Collection: 1. Collect urine for 24 hours. 2. No preservative.
Special Instructions: Testing referred to Mayo Medical Laboratory ML#NMH24
Specimen Stability: Ambient: 14 days, Refrigerated : 28 days, Frozen: 28 days
GENERAL INFORMATION
Expected TAT 10 - 18 days  
Performing Labcorp Test Code 830794 
Notes Labcorp Test Code: 830794
CPT Code(s) 82542
Lab Section Reference Lab