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ClassIII vs ClassIV

Class IV High Power Laser is NOT a Class III, "cold laser" or a Low-Level Laser Therapy (LLLT/Low Intensity Laser Therapy/LILT, Cold Laser) device. It is a high-power, therapeutic laser with the ability to stimulate accelerated healing energy within a continuum of treatment depths from superficial to extremely deep (6-9 inches). This enables the accelerated treatment of superficial injuries, sprains/strains, and deep intra-articular tissues (inside ofjoints) unreachable by any other physical therapy modality, Class III "low-level" laser or even other Class IV lasers.


In the last decade the goal has been to increase the dose and power density in order to achieve better outcomes.
Class IV laser technology delivers 1500 times more power over a treatment region that is over 250 times larger compared to Class III Therapeutic Laser. Additionally, it also penetrates this healing energy at 10 times the depth below the skin, which allows it to penetrate deeper into the joint than any other therapeutic modality.

Most therapeutic lasers are classified by the Food and Drug Administration as Class III lasers, which:
1. Are known as low-level laser therapy (LLLT), cold laser therapy and low-power laser therapy.
2. Are promoted as an effective way to produce analgesia and accelerate healing of a variety of clinical conditions.
3. Use irradiation intensities that induce minimal (if any) temperature elevation (not more than 0.1-0.5° C). (This minimal elevation restricts treatment energies to a few J/cm2 and laser powers to 500 mW or less...