Coldlasers.Org now offers more FDA cleared class-4 options than any other seller. Over the years, there has been some controversy in the therapy laser market about class-4 lasers and their performance/safety when compared to lower power cold lasers. This controversy is mainly driven by class 1 - 3b manufacturers spending their money and time bashing their higher powered competition to scare people away from what can be a superior product. There are lots of good cases where a class 3b is the best option but in many cases, higher dosages provide better, faster and more consistent results. That is why class 4 systems are becoming the "standard" in top chiropractic offices, laser-dedicated neuropathy centers and pain clinics. The truth is that all the options we sell have their niche. First, lets look at the class-4 systems we sell and then we will continue the discussion.

	Brand	Spec	Price	Notes
	ReGen Laser	30 to 104 watts, Up to 6 Wavelengths Pulse & CW	$16,950 - $54,950	The Gold standard of lasers.
	ReGen Laser	25 to 60.3 watts, Up to 4 Wavelengths Pulse & CW	$10,950 - $19,950	High performance in a low cost system.
	EVOlaser	9 - 27 watts, Up to 4 Wavelengths Pulse & CW	$8,950 - $14,995	One of the highest perfomance class 4 systems at a reasonable price.
	Apollo Laser	.5 - 5 watt 810nm CW	$5,149 & Up	A great balance of simplicity and safety.
	EVO FX	45 watt tri-wavelength	$24,000	For those who need maximum power.
	Eltech K-Laser	12 - 30 watt Tri/Quad wavelength	$19,990 - $45,000	Built in Italy/ great quality but we no longer sell it.

So, when is a class 4 system the best choice? Class 4 lasers are best for users who:

1. Want to have the option of higher dosages
2. Need to treat very deep areas
3. Want to treat larger area (like in neuropathy)
4. Want superior pain control
5. Will be treating a wide variety of tissue injuries with high to medium dosages
6. Want to have the shortest treatment times
7. Have a higher volume practice
8. Can afford a higher-end more flexible laser

Class 4 system are just like other lower power systems except they deliver the energy faster. Technically, they do not push the energy deeper. The ability to deliver a photo-chemical reaction deep in the body is based on RATS: reflection, absorption, transmission, scatter and this is controlled by the wavelength of light. More powerful systems deliver the energy faster so that you can get to your target dosage (at depth) in a shorter time. If the goal is to deliver maximum energy at depth and get a photo-chemical reaction, you want your highest power wavelength to be in the 810nm range. This is the wavelength with the highest efficiency at producing a photo-chemical reaction in deep in tissue.

In cases where the energy needs to be delivered over a large problem area, this extra power keeps the treatment times at a fraction of the time for class 1m - 3b systems. The average class 4 system is 5 to 50 times more powerful than a lower class laser.

Dosage equals average power X treatment time so if you targeting the same dosage, a 10-watt laser will accomplish in 1 minute what it takes 1-watt needs 10 minutes to accomplish.

The extra power also allows practitioners to deliver class 3b dosages in just a couple minutes or go to higher dosages for superior pain control. You can also use the extra power to distribute energy over a larger area which often helps support the surrounding inflammation to help people feel better faster.

If desired, class 4 system can deliver medium dosage like you get in a class 3b system and lower power systems but class 4 systems give you the choice to treat larger areas, deeper areas, do shorter treatment times or provide better pain control. It is up to the practice to decide how to use the system.

There are 3 downsides to these system:

1. They are more expensive than class 1 to 3b systems
2. They must be kept moving (in general) if delivering over about 1 joule/second/cm²
3. They have a higher risk of eye damage. (This is extremely low if everyone wears safety glasses)

Class 4 Systems Over 40 watts

Not all class 4 system are alike. Much of the bad press about class 4 laser is really about poorly designed over 40 watts. Once you get into systems that deliver 40 joules/second, you must use a larger emitter head (which is not hard) or keep the system moving to reduce over-heating or have some thermal control system. In busy clinics, this not a limitation, it is the standard process anyway as they have a lot of patients with large and deep problems where a lower power system could make it too burdensome to get an appropriate dosage.

Another solution is the ReGen Laser. It is the first system to fix this problem with built-in skin temperature measurements that automatically turn down the power level to reduce the risk of over-heating. They also use larger emitters and they offer systems with up to 6 different wavelengths including some cooler wavelengths.

Multiwavelength system are not just targeting higher deliver rates. Newer system can have up to 6 six different wavelengths. These systems include laser diode that each have unique advantage allow users to treat a wider variety of problems. For example, the addition of blue laser (450nm) is best for antibacterial and anti-viral applications so it might not be used in most therapies but having that extra power at that wavelength makes the laser much more flexible.

Digging Deeper into the Fear Inducing Claims

Below is a table that shows some common claims and some of the underlying facts behind the claim. Always keep in mind that almost every class 4 laser has the option to turn down the power when it is appropriate so you have more flexibility with a higher power pulsing/CW class 4 laser.

We sell Eltech K-Laser, EVO laser, Apollo, Pilot and Accuray class 4 systems.

So, what conclusions can we make about class 4 lasers?

The line between a class 4 and class 3 is gray. The Avant and Thor class 3b systems have similar specs and performance to the lower-power class 4 lasers. Because the Apollo is not a fiber optic design, it cost than fiber-optic based class 4 system. Class 4 therapy lasers can be the perfect laser for many applications but that really depends more on the requirements of the application or practice.

The bottom line is that class 4 system deliver results. Many people that don't get results with a class 3b and below, will get results with a class 4. That is why they are used in tens of thousands of clinics in the US.

• We sell all the best class 4 therapy lasers including ReGen Laser, ATPmax, EVO laser,and Apollo .

Here are a few reasons to buy from ColdLasers.Org

	Brick and Mortar Located at 913 Main Street in Louisville, CO. We are not some drop shipper, we have the largest inventory in the US.
	The Best Support in the Laser Industry We will make sure you get no-pressure unbiased advice, the best training and the best support.
	The Industries Best Protocol Library Every laser comes with the Laser-Therapy.US library. The app dynamically creates pictorial treatment plans for over 250 different conditions for humans, pets and horses.
	No Sales Tax Outside Colorado The price on the site is the total price if you live outside of Colorado.
	Warranty Support All our system include a warranty between 1 and 5 years. If there is a problem, we will help you.
	30-Day Satisfaction Guarantee Pros get a 30-day 100% money back guarantee on new systems. Home users get a 30-day guarantee with 15% restocking fee.
	Custom Marketing Support Any Pro system over $5000 includes custom marketing kit with flyers, pamphlets and posters.
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	Low Price Guarantee ColdLasers.Org will beat any published price and give you better support and training.
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