Catecholamines, Fractionated, 24-Hour Urine without Creatinine
Test code
CPT code(s)*
Test resources
Please visit our Clinical Education Center to stay informed on any future publications, webinars, or other education opportunities.
Details
Includes
Epinephrine, Norepinephrine, Calculated Total (E+NE), Dopamine
CPT code 81050 may be added at an additional charge for volume measurement
Methodology
Liquid Chromatography/Mass Spectrometry (LC/MS)
Assay category
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
Alternative name(s)
Catecholamines, Free,Adrenaline,Noradrenaline
Specimen requirements | |
|---|---|
| Patient preparation | It is preferable for the patient to be off medications for a minimum of 18-24 hours prior to collection. However, common antihypertensives (diuretics, ACE inhibitors, calcium channel blockers, alpha and beta blockers) may cause minimal or no interference. Patient should avoid tobacco, tea, coffee, and strenuous exercise for 8-12 hours prior to collection. |
| Preferred specimen(s) | 1 mL preserved 24-hour urine with 25 mL 6N HCl collected in a plastic 24-hour urine container |
| Alternative specimen(s) | Unpreserved 24-hour urine with pH ≤6 |
| Minimum volume | 0.7 mL |
| Collection instructions | Collect 24-hour urine with 25 mL 6N HCL to maintain a pH ≤3. If no preservative is used, specimen must be stored refrigerated during collection but shipped frozen and pH must be ≤6. Record 24-hour urine volume and patient's age on test request form and on urine container. |
| Transport container | Plastic urine container |
| Transport temperature | Frozen |
| Specimen stability | Select a service area to view this section. |
| Reject criteria | Preserved urine received refrigerated with pH >3 • Unpreserved urine received frozen with pH >6 |
Reference Range(s)
Epinephrine, 24 hr Urine
| Pediatric | Not Established |
| Adults | ≤24 mcg/24 h |
Norepinephrine, 24 hr Urine
| Pediatric | Not Established |
| Adults | ≤100 mcg/24 h |
Calculated Total (E+NE)
| Pediatric | Not Established |
| Adults | 26-121 mcg/24 h |
Dopamine, 24 hr Urine
| Pediatric | Not Established |
| Adults | 52-480 mcg/24 h |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance 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.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
The tests listed by specialty and category are a select group of tests offered. For a complete list of Quest Diagnostics tests, please adjust the filter options chosen, or refer to our Directory of Services.