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Laboratory Test Directory

Metanephrines, Fractionated, Random, Urine


Name Method Department Units
Metanephrines, Fract. Urine Enzymatic Colorimetric Assay
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Send Out mcg/g creatinine

Battery Members

Metanephrine/Creatinine, Normetanephrine/Creatinine, Total Metanephrine/Creatinine, Creatinine Concentration

Specimen Requirements

Urine - Random

Container Type Container Size Specimen Volume

Sterile container

N/A 5 mL

Room temperature - 7 day(s)
Refrigerated - 7 day(s)
Frozen - 14 day(s)

Specimen Preparation

  • Transport to laboratory as soon as possible

Reasons for Rejection

  • Wrong type of specimen


Patient Preparation: Tricyclic antidepressants and labetalol and sotalol (beta blockers) may elevate levels of metanephrines. If clinically feasible, these medications should be discontinued at least 1 week before collection.

CPT Code

  • 83835