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N-METHYLHISTAMINE,URINE

Test Code

10243X

CPT Code(s)

82570
83789

Includes

Creatinine

Preferred Specimen(s)

Preferred Specimen Volume: 5 ml
Specimen Type ALIQUOT OF A WELL-MIXED 24 HR. URINE
Specimen State Refrigerated (cold packs)
Collect 24 hour urine with no preservatives.

Icteric specimens will not be rejected.

Total volume required. Record on both the specimen container
and the request form.

Urine preservative collection options: 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.

Random urine is also acceptable.

STABILITY:
Room temperature: 24 hours
Refrigerated: 8 days
Frozen: 14 days

Minimum Volume

3 ml

Transport Container

Sterile container (screw top)

Methodology

Liquid Chromatography/Tandem Mass Spectrometry (LC/MS/MS) • Enzymatic Colorimetric Assay

Performing Laboratory

990-NICHOLS-MAYO

Setup Days

T,TH

Report Available

6 DAYS

Reference Range(s)

N-Methylhistamine, Urine
0-5 years: 120-510 mcg/g creatinine
6-16 years: 70-330 mcg/g creatinine
>16 years: 30-200 mcg/g creatinine

Clinical Significance

Collect 24 hour urine with no preservatives.

Icteric specimens will not be rejected.

Total volume required. Record on both the specimen container
and the request form.

Urine preservative collection options: 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.

Random urine is also acceptable.

STABILITY:
Room temperature: 24 hours
Refrigerated: 8 days
Frozen: 14 days
Nichols SJC refers this to Mayo Medical Lab code 83011.

LOINC®' Code(s)

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
Code
Result NameLOINC CodeComponent Name
Z6825N-METHYLHISTAMINE,URINE44340-8N-methylhistamine/Creatinine
Z6826COLLECTION DURATION13362-9Collection duration
Z6827URINE VOLUME3167-4Specimen volume
Z6828CREATININE CONC2161-8Creatinine

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.