Class IV laser therapy is a non-invasive, drug-free modality that uses high-powered near-infrared light to stimulate cellular activity. It’s part of the greater category of photobiomodulation therapy (PBMT), delivering deep light penetration to activate the body’s natural recovery processes.
What you need to know:
- Light from Class IV laser systems penetrates deeply to produce rapid, targeted results, such as increased ATP, improved circulation, reduced inflammation, and more.
- Laser therapy boosts mitochondrial activity, reducing pain and inflammation, increasing range of motion, and accelerating cellular recovery.
- Aspen Laser’s FDA-cleared systems are approved and clinically validated for pain relief, reduced inflammation, and local circulation.
- Real-world evidence shows positive outcomes for a range of acute and chronic conditions, from pain relief and neuropathy to sports injuries, wound recovery, and joint pain.
Physical therapists, chiropractors, and other providers seeking better patient outcomes and faster relief will find that laser therapy delivers both.
What Is Class IV Laser Therapy?
Class IV laser therapy is a high-powered form of light therapy that uses non-ionizing red and near-infrared light to alter cellular activity. It’s one part of the greater classification of photobiomodulation therapy (PBMT).
By altering cellular activity, the body repairs and recovers faster through its natural processes. Traditional approaches to pain and inflammation are merely Band-Aids on symptoms, not a true solution.
Laser therapy is pain-free, non-invasive, and drug-free, penetrating deep to address the underlying causes of pain and inflammation at the cellular level. The cellular effects of light include:
- Stimulating mitochondrial enzymes
- Increased ATP production
- Improved circulation
- Reduced inflammation
- Accelerated tissue repair
Class IV vs. Low-Level Laser Therapy (LLLT): What’s The Difference?
- Low-Level Laser Therapy (LLLT): Lower power output, limited/localized results
- Class IV Lasers: Deeper light penetration, higher power output, better and faster results
These categories refer only to power output and safety classification. They’re not two different types of laser therapy. Class IV and LLLT devices both use photobiomodulation, but Class IV lasers can penetrate deeper and treat larger areas faster.
FDA Clearance For Class IV Laser Therapy Systems
Class IV therapy systems from Aspen Laser hold two FDA 510(k) clearances. These clearances include at least these three conditions, in addition to other clearances that vary by device:
- Temporary pain relief
- Reduced inflammation
- Improved local circulation
How Is It Used In Photobiomodulation (PBM)?
NIR wavelengths for laser therapy range from 810 to 1064 nms to achieve deep penetration and reduce surface light scattering. Light is absorbed by mitochondria, increasing ATP (adenosine triphosphate) production and releasing more cellular energy.
Natural benefits of increased cellular energy include:
- Reduced pain
- Reduced inflammation
- Increased range of motion
- Accelerated cellular recovery
Additional studies have seen the benefits of laser therapy across multiple medical applications, including:
- Diabetes treatments
- Neural disease treatments
- Dermatology
- Post-radiation complications
- Dentistry
Real-World Results of Class IV Laser Therapy
Aspen’s global community of providers and patients has seen incredible outcomes for both acute and chronic conditions with Class IV laser therapy, often after only one session.
These results include relief from:
- Back and neck pain
- Arthritis
- Carpal tunnel syndrome
- Fibromyalgia
- Joint and muscle pain
- Neuropathy
- Plantar fasciitis
- Sciatica
- Tendonitis
- Bursitis and TMJ disorders
- Sports injuries
- Wound recovery
- Reducing scar tissue
- Reduced inflammation at surgical sites
“The results of the Aspen Laser are unmatched. Results are immediate. Patients are satisfied, and those who experienced pain for years are finally getting relief.
I have many success stories with a wide range of conditions I’ve treated, from diverse musculoskeletal issues, infections, Parkinson’s, TBIs, and even a pulmonary embolism. It seems too good to be true, but it isn’t at all.”
~ Brady Raney, Raney Chiropractic, Livingston, MT
Why Class IV Laser Therapy and PBM Are The Future of Recovery Medicine:
- Class IV laser therapy uses high-powered, near-infrared light to stimulate cellular activity and activate natural recovery processes.
- Light from Class IV laser systems penetrated deeply to produce rapid, targeted results, such as increased ATP, improved circulation, reduced inflammation, and more.
- Laser therapy boosts mitochondrial activity, reducing pain and inflammation, increasing range of motion, and accelerating cellular recovery.
- Aspen Laser’s FDA-cleared systems are approved and clinically validated for pain relief, reduced inflammation, and local circulation.
- Real-world evidence shows positive outcomes for a range of acute and chronic conditions, from pain relief and neuropathy to sports injuries, wound recovery, and joint pain.
Get Class IV Laser Therapy Outcomes For Your Patients
Better outcomes, faster relief. All with light. Laser therapy could be the non-invasive, pain-free solution your patients need to accelerate recovery. Reach out to the Aspen Laser team and learn more about our industry-leading Class IV laser systems.




