Test Overview

Test Methodology

HPLC

Reference Range*

Age specific reference ranges provided with report.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

Medications that may interfere with catecholamines and metabolites include amphetamines and ampehtamine-like compounds, appetite suppressants, bromocriptine, buspirone, caffeine, carbidopa-levopa (Sinemet), clonidine, dexamethasone, diuretics, ethanol, isoproterenol, methyldopa (Aldomet), MAO inhibitors, nicotine, nose drops, propafenone (Rythmol), reserpine, theophylline, tricyclic antidepressants, and vasodilators.

Test Details

Days Test Performed

Monday - Saturday

Analytic Time

3 - 6 days

Soft Order Code

CATU

MiChart Code

Catecholamines, fractionated, urine, 24 hour

Synonyms

Synonyms

CATECHOLAMINES, URINE
Catecholamine Fractionation, Urine
Catecholamines, Free, Urine
Catecholamines, Unconjugated, Urine
Epinephrine, Urine
Norepinephrine, Urine
Unconjugated Catecholamines
Catocholimine
CATECHOLEMINES, URINE
EPU
NOREPU
CATU-D
DOPAMINE
EPINEPHRIN
NOREPINEPH
EPINEPHRINE
NOREPINEPHRINE

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Laboratory

Sendout

Laboratory Reference

Mayo CATU

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Specimen Requirements

Offsite Collection Instructions

Collect 24 hour urine specimen. Add 25 mL of 50% acetic acid to container prior to start of collection to maintain pH between 2 and 4 and refrigerate specimen during collection. Mix well, measure 24 hour urine volume, aliquot urine into a plastic urine container and refrigerate. Record total 24 hour urine volume and collection dates/times on request form.
Use 15 mL of 50% acetic acid for children less than 5 years old.

Container

24-hour Urine Jug

Normal Volume

2 mL aliquot of 24 hour urine collection

Minimum Volume

1.5 mL aliquot of 24 hour urine collection

Additional Information

Test includes epinephrine, norepinephrine, and dopamine. Test sent to Mayo Clinic Laboratories.

Billing Information

Fee Codes


CPT Code

82384

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