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- Ordering Info
To view specimen requirements and codes please select your laboratory:
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N-Methyl Histamine, Urine [10243X]
5 mL of a well mixed, unpreserved 24-hour urine
Unpreserved urine • Preserved 24-hour urine with (30 mL 6N HCI, or 25 mL of 50% Acetic Acid, or 5 grams Na2CO3, or 10 grams of Boric Acid during collection)
Collect 24-hour urine with no preservatives.
Icteric specimens are no longer rejected. Total volume is required. Record on both the specimen container and the request form.
Note: The addition of preservative or application of temperature controls must occur within 4 hours of completion of the collection: 6N HCl, 50% Acetic Acid, Na(2)CO(3), Toluene, 6N HNO(3), Boric Acid, Thymol.
Plastic Urine Container, leak-proof
Refrigerated (cold packs)
Room temperature: 24 hours
Refrigerated: 8 days
Frozen: 14 days
Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS) • Enzymatic Colorimetric Assay
Mayo Medical Laboratories
200 First Street SW
Rochester, MN 55905
Set up: Tues, Thurs a.m.; Report available: 5 days
|0-5 years: 120-510 mcg/g creatinine|
|6-16 years: 70-330 mcg/g creatinine|
|>16 years: 30-200 mcg/g creatinine|
Screening for and monitoring of mastocytosis and
disorders of systemic mast-cell activation, such as
anaphylaxis and other forms of severe systemic allergic
reactions. Monitoring therapeutic progress in conditions
that are associated with secondary, localized, low-grade
persistent, mast-cell proliferation and activation such
as interstitial cystitis.
The Result and LOINC information listed below should not be used for electronic interface maintenance with Quest Diagnostics. Please contact the Quest Diagnostics Connectivity Help Desk for more information at 800-697-9302.NOTE: The codes listed in the table below are not orderable Test Codes.
|Result Name||LOINC Code||Component Name|
|49317||N-Methyl Histamine, Urine||12714-2||N-methylhistamine|
|ASTMRCVD||Results Received||19146-0||Reference lab test results|
|AVOLUME||URINE VOLUME||3167-4||Specimen volume|
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
LOINC assignment is based on a combination of test attributes, including the method used by the performing laboratory. For tests not performed by Quest Diagnostics, codes are assigned by the performing laboratory.
* The tests listed by specialist are a select group of tests offered. For a complete list of Quest Diagnostics tests, please refer to our Directory of Services.