Creatinine; Metanephrines; Normetanephrines; Total Metanephrines;
Useful in the evaluation of pheochromocytoma
If possible, patients should discontinue all drugs at least 1 week prior to collection. Medications that can interfere with the assay include: L-DOPA, Alpha-methyldopa (Aldomet), Buspirone, Codeine, Isoetharine, Isoproterenol, Mandelamine, Metoclopramide, Acetaminophen (high concentrations only), Labetalol, Catecholamine-containing drugs, MAO inhibitors, diuretics and vasodilators.
5.0 mL Random Urine in a Non-Sterile Yellow Capped Container
7 days (acidified) Ambient
8 days Refrigerated
30 days (acidified) Frozen (transport)
Record patients age on test request form and urine vial
1.5 mL Urine
Normetanephrine Random Urine: By Report ug/L
Metanephrine Random Urine: By Report ug/L
Creatinine, Random Urine: view ref range mg/dL
Normetanephrine/Creatinine Ratio: < 700 ug/g creat
Metanephrine/Creatinine Ratio: < 300 ug/g creat
Useful in the evaluation of pheochromocytoma
2 to 3 days
00913333
82570, 83835