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Epinephrine (adrenaline) in plasma or serum

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of adrenaline (epinephrine) in your blood, which helps your body respond to stress or emergencies by increasing heart rate, blood pressure, and energy.

Quick summary

["Adrenaline levels can indicate stress responses or certain medical conditions."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
20547-6
Short code
Me-ePHEDrine Ur Cfm-mCnc
Synonyms
Me-ePHEDrine Ur Cfm-mCnc
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
confirm
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

Why This Test Might Be Done

Your doctor may order this test if you have symptoms like rapid heartbeat, high blood pressure, or unusual stress reactions. It can also help diagnose conditions such as pheochromocytoma (a rare tumor affecting hormone production) or evaluate adrenal gland function in people with diabetes or other health issues.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to avoid caffeine or certain medications for a few hours before testing. Bring a list of your current medications to your doctor’s office.

During the Test

A healthcare provider will draw blood from a vein in your arm using a small needle. You may feel a slight pinch, but the procedure is quick and usually painless. The blood sample is then sent to a lab for analysis.

What the Results Mean

Results are compared to standard reference ranges, but exact values can vary by lab. High levels may suggest overactive adrenal glands or stress-related responses, while very low levels might indicate adrenal insufficiency or other health concerns.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Adrenaline Level

Frequently asked questions

How long does it take to get results?
Results are typically available within 1 to 3 business days, depending on your lab and testing schedule. Your doctor will contact you once they have the results.
Can I eat or drink before this test?
You can eat and drink normally unless instructed otherwise by your doctor. Some tests may require fasting, but adrenaline levels are not affected by food.
What are common causes of high adrenaline levels?
Common causes include severe stress, anxiety, physical exertion, certain medications, or medical conditions like pheochromocytoma. If you experience frequent high adrenaline levels, talk to your doctor about further evaluation.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy