Magnetic Resonance Angiography of the Neck, With and Without Contrast
A magnetic resonance imaging test that evaluates blood vessels in the neck, performed with and without contrast.
["This test uses magnetic resonance imaging to assess the neck arteries and nearby blood flow."]
Key facts at a glance
- LOINC
- 36877-9
- Short code
- MRA Neck vv WO contr
- Synonyms
- MRA Neck vv WO contr
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 22
- Ref high
- 198
- Critical range
- — – 10000 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- mr-angio
- CPT
- 82553
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What is this test?
Magnetic resonance angiography (MRA) of the neck creates detailed images of the major arteries that carry blood from the heart to the brain. The examination includes images before and, when appropriate, after intravenous contrast is given.
Why might I need this test?
This test may be ordered to investigate narrowed or blocked arteries, aneurysms, blood clots, or other problems involving neck blood vessels. It may also be used to evaluate blood-flow abnormalities or monitor the appearance of a blood vessel after a procedure.
How is the test performed?
You will lie on a table inside a magnetic resonance scanner while the machine creates images of the vessels in your neck. If contrast is used, it is given through a small intravenous line, and the scan may take longer than a routine MRI. The technologist will tell you when to remain still and may ask you to hold your breath briefly.
How do I prepare for the test?
Follow the instructions provided by the imaging center; fasting may or may not be required. Tell the care team if you have a pacemaker or other implanted device, kidney disease, are pregnant or may be pregnant, or have had a serious reaction to contrast. Metal objects and items with magnetic cards generally cannot enter the scanner area.
Reference range
Adult males: 22-198 U/L; Females: 22-198 U/LN/A
No special preparation required. Inform provider of any chest pain or symptoms.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal findings may indicate narrowing or blockage of a neck artery, an aneurysm, a blood clot, or an unusual blood-flow pattern. The radiologist considers these findings together with your symptoms, medical history, and other tests. A concerning result may lead to additional imaging, medication, or a procedure to protect blood flow to the brain.
Short name
Neck MRA with/without contrast
Frequently asked questions
Does the test use radiation?
Is intravenous contrast always used?
Will I be able to drive home afterward?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
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.
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 17, 2026. · Read our editorial policy