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Laboratory Medicine

Test catalogue

Catecholamines, 24hrs Urine

Test name

Catecholamines, 24hrs Urine

Plain 24 bottle Specimen Type / Requirements

Container Type = 24 hour 25 mL 6 mol/L (6N) HCl acid Bottle

Minimum Volume = 25 mL urine from mixed urine Collection

Specimen Handling

Collection Instructions: Collect urine in a container with 25 mL 6 mol/L (6N) HCl acid. It is important that the urine is refrigerated during the collection. Restrict caffeine, nicotine and alcohol 24hrs prior to collection. Discontinue Methyldopa (Aldomet) at least 5 days prior to collection. Other drugs usually do not interfere with this assay. State 24 h volume and collection date.

Write your "start" and "end" date and time of collection on the collection label or requisition.

Laboratory Staff Instructions: State 24 hour volume and collection date. A separate specimen is required if Metanephrines are ordered as well. Store and send frozen.

Stability: stable for 1 month refrigerated at 2-8°C and longer frozen.

Transportation: Send sample to SMH core lab as soon as possible.

Sample Rejection Criteria: Unlabelled, NSQ or leaking specimen

Required Documentation

Turnaround Time (TAT)

7 Days

Test Utilization

Reference Value

Creatinine/d: 7.0 - 15.0 nmol/d

Epinephrine Total: < 150 nmol/d

Epinephrine/Creatinine Ratio: 0.0 - 7.0 nmol/mmol Creatinine

Norepinephrine Total: < 600 nmol/d

Norepinephrine/Creatinine Ratio: < 70 nmol/mmol Creatinine

Test Code

24CTF

Methodology

LC-MS/MS

Testing Location

SMH-Biochemistry

Other Information

Last Updated: June 05, 2020