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3315U: Metanephrines, Fractionated 24 hr Urine Print View
Total Volume     mL 
Metanephrines Total 24 hr Urine HPLC  < 900  ug/24hr 
Normetanephrine 24 hr Urine HPLC  < 600  ug/24hr 
Metanephrine 24 hr Urine HPLC  < 300  ug/24hr 
Metanephrine/Creatinine Ratio CALC  < 600  ug/g creat 
Creatinine C    mg/dL 
Creatinine, 24 Hr. CALC  view ref range  g/24hr 

PRIMARY
1 Urine 24 hour 10 (6) mL   Frozen - 60 Day(s)/Refrigerated - 14 Day(s) See COLLECTION INSTRUCTIONS./// 
ALTERNATE

Evaluate the presence of abnormal catecholamine production, diagnose pheochromocytoma, neuroblastoma and ganglioneuroblastoma. Slightly elevated concentrations of urinary metanephrines (900-1300 ug/24 hr) are usually associated with essential hypertension, intense physical activity, emotional and physical stress, drug interferences and improper specimen collection. Higher concentrations (greater than 1300 ug/24 hr) are suggestive 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.
1. Refrigerate during and after collection.
2. After collection, mix the specimen, measure the total volume and
transfer a 10 mL aliquot to a clean, leak proof screw cap container.
3. Record the 24 hr total volume on the requisition form or
shipping manifest.
4. Store and ship refrigerated.
5. Acid additive (hydrochloric, nitric or acetic acid) is acceptable
but not necessary if the specimen is refrigerated during collection
and transportation.
Setup Schedule
Tuesday-Saturday

Reported (Analytical Time)
Next day

CPT Codes
82570, 83835

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
CPT Codes: 83835; 82570






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