MRI of the Left Brachial Plexus with IV Contrast
An MRI that uses injected contrast to examine the left brachial plexus, the network of nerves between the neck and arm.
["This MRI provides detailed images of the left brachial plexus to help evaluate nerve-related shoulder or arm symptoms."]
Key facts at a glance
- LOINC
- 36240-0
- Short code
- MR Brachial plexus-L W contr IV
- Synonyms
- MR Brachial plexus-L W contr IV
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 44
- Ref high
- 147
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- mr
- CPT
- 84075
- SNOMED
- 27550007
- 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 imaging (MRI) of the left brachial plexus creates detailed pictures of the nerves running from the neck through the shoulder and arm. Intravenous contrast may be used to make inflammation, injury, or other abnormalities easier to see.
Why might I need this test?
This test may be recommended for symptoms such as shoulder or arm pain, numbness, tingling, weakness, or reduced muscle size. It can help assess possible nerve compression, inflammation, injury, or other structural problems affecting the left arm.
How is the test performed?
You will lie on a padded table that moves into the MRI scanner. The technologist may position your head, neck, shoulder, or arm to obtain clear images, and intravenous contrast is usually given through a vein in your arm if contrast is required.
How do I prepare for the test?
Follow the imaging center's instructions about medications, eating, and drinking before the appointment. Tell the care team about any implanted devices, metal in your body, prior contrast reactions, kidney disease, or possible pregnancy before entering the scanner.
Reference range
Adult: 44-147 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Left Brachial Plexus MRI with Contrast
Frequently asked questions
Does this MRI use radiation?
What is IV contrast used for in this MRI?
Will I be able to drive home after 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