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N-Methylhistamine, Random Urine

Test Codes

EPIC: LAB7952, Mayo: NMHR

Department

Send Outs

Instructions

Specimen Collection Criteria

Collect (preferred specimen): 5.0 mL random urine specimen in a screw-capped container or other sterile collection cup. (Minimum: 3.0 mL)

Physician Office/Draw Specimen Preparation

Maintain specimen refrigerated (2-8°C or 36-46°F) prior to transport.

Preparation for Courier Transport

Transport: 5.0 mL random urine, refrigerated (2-8°C or 36-46°F). (minimum: 3.0 mL)

Rejection Criteria

Specimens not collected and processed as indicated. 

In-Lab Processing

Maintain specimen refrigerated (2-8°C or 36-46°F) prior to transport.

Transport: 5.0 mL random urine, refrigerated (2-8°C or 36-46°F). (minimum: 3.0 mL)

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 14 days
Refrigerated (2-8°C or 36-46°F): 28 days
Frozen (-20°C/-4°F or below): 28 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Mayo Medical Laboratories, Rochester, MN.

Performed

Tuesday, Thursday.
Results available in 4-8 days.

Reference Range

By report.

Test Methodology

Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) and Enzymatic Colorimetric Assay.

CPT Codes

82542, 82570

Contacts

Last Updated

10/8/2023