Urine Metanephrines, 24 Hour

Message

Patient Preparation: It is preferable for the patient to be off medications for three days before collection. Patient should avoid tobacco, tea, coffee for three days before specimen collection. Common antihypertensives (diuretics, ACE inhibitors, calcium channel blockers, alpha and beta blockers) cause minimal or no interference. Medications which are alpha agonists (Al Domet), alpha blockers (Dibenzyline) should be avoided 18-24 hours before specimen collection. Collect urine in 24 hour plastic leak-proof container Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following day

Test Code

LAB409 MFU24

Alias/See Also

MFU24

CPT Codes
83835

Includes

@BKRCERMSGREFRESH(2302793)@ @BKRCERMSGREFRESH(2302794)@

Instructions

Processing Instructions (Lab use only): After urine collection, add 25 mL of 6N HCl to obtain a pH below 3. Urine without preservative is acceptable if pH is below 6 and the sample is shipped frozen. Minimum Testing Volume: 1.5 mL Urine Transport Temperature: Ambient: PreservedFrozen: UnpreservedStability: PreservedAmbient: 10 DaysRefrigerated : 14 DaysFrozen: 90 DaysStability: UnpreservedAmbient: N/A Refrigerated : N/A Frozen: 30 Days Causes for Rejection: Urine collected with boric acid

Report Available

6-Days

Clinical Significance

1230170903

Last Updated: May 18, 2026

The CPT Codes provided in this document 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 payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.