Metanephrines, Fractionated Urine (Includes Creatinine)

TEST: 501533
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CPT: 83835; 82570
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Test Includes

Metanephrine, Normetanephrine, Creatinine

Expected Turnaround Time

2 - 6 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Specimen Requirements

Specimen

Urine (24-hour, well-mixed)

Volume

10 mL aliquot

Minimum Volume

1 mL aliquot (Note: This volume does not allow for repeat testing.)

Container

Urine container, 24-hour

Collection

Collect aliquot of a frozen, well-mixed 24-hour urine. Collect urine in plastic bottle containing 25 mL 6N HCI, indicate 24-hour volume. Patients should be instructed to avoid direct contact with collection bottles or bags containing preservatives, especially hydrochloric acid. Collection instructions: Patients should be given two containers; one bottle containing 6N HCI should be used for pooling voids over 24 hour collection period. Additional bottle should be used for each void and poured into pooling bottle immediately following void.

Storage Instructions

Store and ship frozen.

Test Details

Methodology

High-pressure liquid chromatography/tandem mass spectrometry (HPLC/MS-MS), colormetric