Magnetic Resonance Angiography of the Right Thigh Vessels — Without Contrast
An MRI-based examination that creates images of the blood vessels in the right thigh without injecting an IV contrast agent.
["This test evaluates the right thigh's blood vessels using MRI and does not require injected contrast."]
Key facts at a glance
- LOINC
- 43515-6
- Short code
- MRA Thigh ves-R WO contr
- Synonyms
- MRA Thigh ves-R WO contr
- 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, is an imaging test that shows blood vessels using magnetic fields and radio waves. This version examines the vessels in the right thigh without IV contrast.
Why might I need this test?
Your clinician may order this test to evaluate blood flow in the right thigh, especially for symptoms such as leg pain, numbness, weakness, coldness, or a change in skin color. It may also be used to assess suspected narrowing, blockage, or other blood-vessel problems.
How is the test performed?
You will lie on a padded MRI table while a technologist positions equipment around your right thigh and takes a series of images. The scan may be noisy and can take 30 to 60 minutes, although the exact time varies.
How do I prepare for the test?
Follow the instructions provided by the imaging facility. Remove jewelry, watches, hairpins, and other metal items, and tell the technologist if you have a pacemaker, implanted medical device, metallic implant, or pregnancy. Tell staff if you are claustrophobic; relaxation techniques or medication may be options.
Reference range
Adult males: 0-15 mm/hr; Females: 0-20 mm/hrN/A
No special preparation required. CRP may be affected by acute illness.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Abnormal findings may indicate narrowing, blockage, an aneurysm, or another problem affecting blood flow in the right thigh. Results are interpreted together with your symptoms, physical examination, and other imaging or tests, so an abnormal image does not by itself establish a diagnosis.
Short name
Right Thigh MRA Without Contrast
Frequently asked questions
Does this MRA use injected contrast?
Is magnetic resonance angiography the same as a regular MRI?
Will I feel anything during the test?
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 16, 2026. · Read our editorial policy