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Magnetic Resonance Angiography With Intravenous Contrast

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

An MRA uses magnetic fields and injected contrast to image blood vessels and help evaluate narrowing, blockage, aneurysms, or other vascular problems.

Quick summary

["This imaging test helps identify abnormalities in the blood vessels, including narrowing, blockages, and aneurysms."]

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

Key facts at a glance

LOINC
105148-1
Short code
MRA UE ves-R W contr IV
Synonyms
MRA UE ves-R W contr IV
Category
liver
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Ref low
0
Ref high
20
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
mr-angio
CPT
85651
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, or MRA, creates detailed images of blood vessels using magnetic fields and radio waves. When intravenous contrast is used, it is injected through a vein to make the vessels easier to see.

Why might I need this test?

MRA may be ordered to investigate symptoms such as dizziness, weakness, chest pain, or a reduced pulse. It can also be used to monitor conditions affecting the arteries or to plan and follow treatment for blood-vessel disease.

How is the test performed?

You will lie on a table that moves into a large MRI scanner. Images are taken while you remain still, and an intravenous line may be used to administer contrast. The procedure usually takes 30 to 60 minutes, although timing varies.

How do I prepare for the test?

Follow the instructions provided by the imaging center. Tell your care team about prior contrast reactions, kidney disease, pregnancy, implanted medical devices, or metal in your body before receiving contrast.

Reference range

Adult males: 0-15 mm/hr; Females: 0-20 mm/hrN/A

Specimen: serum

No special preparation required. CRP may be affected by acute illness.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

MRA with IV contrast

Frequently asked questions

Is an MRA the same as a standard MRI?
MRA is a specialized MRI technique designed to examine blood vessels. It may include intravenous contrast to improve the visibility of the vessels.
Is the intravenous contrast used in an MRA the same as CT contrast?
No. MRA generally uses a gadolinium-based contrast agent, which is different from the iodinated contrast commonly used for CT scans.
Will I need someone to drive me home?
Most people can leave normally after an MRA. If you received sedating medication or your care team advises it because of contrast-related symptoms, you may need a ride home.
  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