Description
Blood, NA, Fasting or Non Fasting: As suggested by doctor
Sample Required:
A complete 24-hour urine collection is required for this test.
Test Time:
The test time involves collecting urine over a 24-hour period and then submitting the collected sample to the laboratory. Results are often available in a short period of time.
Test Normal Range:
The normal range for catecholamines in a 24-hour urine collection can vary depending on factors such as age and the laboratory conducting the test. Typical normal ranges are:
Epinephrine (adrenaline): Less than 20 µg/24 hours (micrograms per 24 hours)
Norepinephrine (noradrenaline): Less than 90 µg/24 hours
Dopamine: Less than 500 µg/24 hours
What is the Test?
The Catecholamines Urine 24-Hour Test measures the levels of catecholamine hormones—epinephrine, norepinephrine, and dopamine—in a urine sample collected over a 24-hour period. These hormones are produced by the adrenal glands and play a crucial role in regulating various bodily functions.
Test Procedure:
Urine Collection: Your healthcare provider will provide you with a container and specific instructions for collecting urine over a 24-hour period. Storing the Sample: Keep the collected urine container refrigerated or in a cool place as instructed.Submit Sample: Return the collected urine to the laboratory as directed by your healthcare provider.
When to Take the Test:
This test is usually ordered when there are concerns about overproduction or underproduction of catecholamines, which can be related to conditions such as pheochromocytoma, hypertension, and other adrenal gland disorders.
Who Should Take This Test:
Individuals experiencing symptoms such as rapid heart rate, high blood pressure, anxiety, and sweating. People suspected of having adrenal gland disorders or tumors. Those undergoing evaluation for autonomic nervous system dysfunction.
Precautions for Exceptional Cases (Pregnancy etc.):
Pregnant individuals should inform their healthcare provider, as catecholamine levels can be influenced by pregnancy.
FAQs:
Q1: Can I start the urine collection at any time of the day?
A: Most commonly, the collection starts in the morning after discarding the first urine of the day. Follow your healthcare provider’s specific instructions.
Q2: Can I exercise during the urine collection period?
A: Avoid intense exercise during the collection period, as it can affect catecholamine levels.
Q3: Can medications interfere with the test results?
A: Certain medications, especially blood pressure medications, can affect catecholamine levels. Tell your doctor about all of the medications you use.
Q4: How is pheochromocytoma treated?
A: Treatment may involve surgical removal of the tumor, blood pressure management, and other therapies as needed.
Q5: Are there dietary restrictions during the test?
A: Some dietary restrictions may apply. Your healthcare provider will provide specific guidance on foods and beverages to avoid during the collection period.
