Laboratory Medicine
Test catalogue
Free Metanephrine, (Metanephrine, Normetanephrine, 3-Methoxytyramine), 24hrs Urine | |
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Test nameFree Metanephrine, (Metanephrine, Normetanephrine, 3-Methoxytyramine), 24hrs Urine |
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Specimen Type / RequirementsContainer Type = 24 hour 25mL 6 mol/L (6N) HCl acid Bottle Minimum Testing Volume = 25mL urine from mixed urine Collection |
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Specimen HandlingCollection Instructions: Collect urine in a container with 25 mL 6 mol/L (6N) HCl acid. It is important that the urine is refrigerated during the collection. Restrict caffeine, nicotine and alcohol 24hrs prior to collection. Discontinue Methyldopa (Aldomet) at least 5 days prior to collection. Other drugs usually do not interfere with this assay. State 24h volume and collection date. Write your "start" and "end" date and time of collection on the collection label or requisition. Stability: stable for 1 month refrigerated at 2-8°C and longer if frozen. Transportation: Send sample to SMH core lab as soon as possible. Sample Rejection Criteria: Unlabeled or leaking specimen |
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Required Documentation |
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Turnaround Time (TAT)10 Days |
Test Utilization |
Reference ValueFree Metanephrine Male: < 270 nmol/day Free Metanephrine Female: < 170 nmol/day Free Normetanephrine Male and Female: < 300 nmol/day 3-Methoxytyramine Male: < 380 nmol/day 3-Methoxytyramine Female: < 300 nmol/day |
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Test Code24MET |
Methodologyliquid chromatography-mass |
Testing LocationSMH-Biochemistry |
Other InformationLast Updated: April 27, 2020 |