Laboratory: Clinical Biochemistry
Test Name:
N-METHYLHISTAMINE - (U)
Test Code: MISC
Clinical Information:
Collection Devices:
24-Hour collection is preferred, but random specimen is also acceptable.
Specimen Required:
Urine: 5.0 mL
Pediatric Urine: 3.0 mL
Referral:
Urine: 5.0 mL

Send urine frozen in a plastic vial.  24-Hour collection is preferred, but random specimen is also acceptable.  Indicate specimen type (24 hour or random).
Requisition:
Reference Values:
 
0 - 5 years: 120 - 510 μ/g creatinine                                           
6 - 16 years:   70 - 330 μ/g creatinine
> 16 years:   30 - 200 μ/g creatinine
(mcg/g = μg/g)
Availability:
Specific days
Available to allergists only. All other requests must be cleared by a Clinical Chemist.
See Also:
More Information:
Store and ship specimen refrigerated or frozen temperature to Mayo Medical Laboratories for analysis.  Record urine volume on requisition and specify 24 hour or random.