24 Hour Urine, N-Methylhistamine Build info

Synonyms

  • N-METHYLHISTAMINE, 24HR URINE
  • NMETHHIS24
  • N-METHYLHISTAMINE, 24HR UR
  • LAB11043

Short Name

N-METHYLHISTAMINE, 24HR URINE

Procedure Master Number

LAB11043

Procedure ID

NWH_395671473

Clinical Info

Screening for and monitoring of mastocytosis and disorders of systemic mast-cell activation, such as anaphylaxis and other forms of severe systemic allergic reactions using 24-hour urine collection specimens
Monitoring therapeutic progress in conditions that are associated with secondary, localized, low-grade persistent, mast-cell proliferation and activation such as interstitial cystitis

Specimen Type

Urine

Container

24hr Ur No Preserv

Collection Instructions

Container/Tube: 24 Hr urine container No preservative
Specimen: 5 mL from well mixed 24 Hr urine collection (3 mL min)
Transport Temperature: Refrigerated
Stability: 14 Days Room Temperature
28 Days Refrigerated or Frozen
Patient Preparation: Patient must not be taking monoamine oxidase inhibitors (MAOIs) or aminoguanidine as these
medications increase N-methylhistamine (NMH) levels.

Transport Instructions

Refrigerated

Specimen Stability

14 Days Room Temperature
28 Days Refrigerated or Frozen
Patient Preparation: Patient must not be taking monoamine oxidase inhibitors (MAOIs) or aminoguanidine as
these medications increase N-methylhistamine (NMH) levels.

Methodology

N-methylhistamine: Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Creatinine 24: Enzymatic Colorimetric Assay

Days Performed

TAT; 4-8 Days

Performing Laboratory

Mayo Medical Laboratories

CPT

82542
LOINC Code: 44340-8

PDM

1859099

Results

Component Name Base Name Common Name External Name
COLLECTION DURATION COLLDUR COLLECTION DURATION
CREATININE CONC CREATCONC CREATININE CONC
CREATININE, 24 HOUR URINE CREAT24HRUR CREATININE 24H UR Creatinine, 24H Ur
N-METHYLHISTAMINE, U NMETHYLHIST N METHYLHISTAMINE, U
URINE VOLUME URINEVOLUME URINE VOLUME Urine Volume