Lumbar Spine MRI Scan: Complete Guide

A lumbar spine MRI scan is the most effective way to examine the lower back, providing detailed images of the vertebrae, intervertebral discs, spinal cord, and surrounding nerves. Lower back pain is one of the most common reasons people seek medical imaging, and an MRI can reveal conditions that X-rays and CT scans often miss. Through Lola Health, you can book a private lumbar spine MRI at over 150 centres across the UK.

What a Lumbar Spine MRI Scan Shows

• Disc herniation (slipped disc) — bulging or ruptured discs pressing on spinal nerves, a common cause of sciatica.
• Degenerative disc disease — age-related wear and tear of the intervertebral discs leading to pain and stiffness.
• Spinal stenosis — narrowing of the spinal canal that compresses the spinal cord or nerve roots.
• Spondylolisthesis — forward slippage of one vertebra over another.
• Nerve root compression — pinched nerves causing pain, numbness, or weakness in the legs.
• Spinal fractures — compression fractures, stress fractures, or traumatic injuries to the vertebrae.
• Infections — discitis (disc infection), osteomyelitis (bone infection), or epidural abscess.
• Tumours — primary spinal tumours or metastatic disease affecting the lumbar vertebrae.
• Cauda equina syndrome — a serious condition where nerves at the base of the spinal cord are compressed, requiring urgent assessment.
• Inflammatory conditions — ankylosing spondylitis and other spondyloarthropathies.

When You Might Need a Lumbar Spine MRI Scan

• Persistent lower back pain lasting more than 6 weeks
• Sciatica — pain radiating down one or both legs
• Numbness, tingling, or weakness in the legs or feet
• Difficulty walking, standing, or sitting for prolonged periods
• Loss of bladder or bowel control (seek urgent medical attention)
• Back pain following an injury or accident
• Back pain with unexplained weight loss or fever
• Pre-surgical planning for spinal procedures
• Monitoring of a previously diagnosed spinal condition

How to Prepare for a Lumbar Spine MRI

• Metal check: Declare all metal implants, spinal hardware, or joint replacements. Some spinal implants are MRI-compatible, but verification is essential.
• Clothing: Wear loose, comfortable clothing without metal. A gown may be provided.
• No fasting required: Unless contrast dye is being used, eat and drink normally.
• Pain management: If lying flat worsens your pain, discuss positioning options with the scanning centre. Pain relief beforehand may help you remain comfortable and still.
• Arrive early: Allow 15 to 20 minutes for check-in and safety screening.

What to Expect During the Scan

1. Check-in: Complete safety screening and change into a gown if required.
2. Positioning: Lie on your back on the scanner table. Cushions may be placed under your knees to reduce lower back strain.
3. The scan: The table slides into the scanner. You will hear loud rhythmic sounds. Keep as still as possible for optimal image quality.
4. Duration: A lumbar spine MRI typically takes 25 to 40 minutes.
5. Contrast: If needed, gadolinium contrast is injected through a small cannula to highlight specific structures.
6. Afterwards: Resume normal activities immediately. Results are reviewed by a consultant radiologist.

How Much Does a Lumbar Spine MRI Cost?

Private lumbar spine MRI scans in the UK typically cost between £350 and £800. Lola Health offers transparent pricing with access to over 150 scanning centres. Each scan includes a full radiologist report delivered promptly.

Lumbar Spine MRI and Blood Testing

Blood tests can provide important context alongside lumbar spine imaging:

• Inflammatory markers (CRP, ESR): Raised levels may suggest inflammatory spinal conditions such as ankylosing spondylitis, infection, or inflammatory arthritis.
• HLA-B27: This genetic marker is associated with ankylosing spondylitis. If positive alongside chronic lower back pain and stiffness, an MRI of the lumbar and sacroiliac joints is often recommended.
• Vitamin D and calcium: Low levels are linked to osteoporosis and an increased risk of spinal fractures. Blood tests can identify deficiencies that affect bone health.
• Full blood count: Abnormalities may point towards infection, malignancy, or anaemia contributing to fatigue and back pain.
• Kidney function (eGFR, creatinine): Important if contrast dye is being considered, and also relevant as kidney problems can cause referred back pain.
• PSA (men): Prostate cancer can metastasise to the spine. If PSA is elevated with new back pain, spinal imaging may be warranted.

Start with a Lola Health blood test to check your inflammation markers (CRP, ESR), calcium, vitamin D, and HbA1c. If results suggest further investigation, a lumbar spine MRI can provide the structural detail your blood results can't show. Peak Insights 70 covers these markers across 70 biomarkers.

Explore our blood test range to complement your lumbar spine MRI.

Considering a broader check? Read our full body MRI scan guide to see what a complete MRI screening covers, or explore the Peak 70 + Full Body MRI bundle for the most thorough health check available.

Frequently Asked Questions

Can a lumbar spine MRI detect a slipped disc?

Yes. MRI is the best imaging method for detecting disc herniations, bulges, and their impact on surrounding nerves.

Is the scan painful?

The scan itself is painless. However, lying still for 25 to 40 minutes may be uncomfortable if you have major back pain. Discuss pain management with your scanning centre beforehand.

Do I need a referral?

No. You can book a private lumbar spine MRI directly through Lola Health.

How soon will I get results?

Typically within a few working days. A consultant radiologist reviews the images and produces a detailed report.

Can an MRI show nerve damage?

MRI can show nerve compression, inflammation, and structural changes that may be causing nerve-related symptoms. However, nerve function testing (EMG/NCS) may also be needed for a complete assessment.

What is the difference between a lumbar and whole spine MRI?

A lumbar MRI focuses specifically on the lower back (L1-L5 vertebrae and sacrum). A whole spine MRI covers the cervical, thoracic, and lumbar regions in a single session.

Can I have a lumbar MRI with spinal implants?

Many modern spinal implants are MRI-compatible, but this must be confirmed before the scan. Bring details of your implant to the appointment.