Overview | Who Can Benefit | How It Works | Pricing | Get Started

Would you like to know how much energy your body needs daily? We offer metabolic testing in at our Downingtown location using a scientific base and FDA-approved test that provides your Resting Metabolic Expenditure (REE). The results are able to identify if your metabolism is slow or high.


After researching the best indirect calorimeter machines, KORR Medical Technologies stood out for its high accuracy and customer-friendly testing. We are offering metabolic testing using the ReeVue Indirect Calorimeter. Read more about ReeVue Indirect Calorimeter by KORR Medical Technologies.

This testing pinpoints the caloric intake required for weight loss, maintenance, or weight gain. It allows you to better understand your baseline energy requirements (Resting Energy Expenditure- REE) which make up for about 60-70% of total energy expenditure daily.

Combining advanced technology with our team of Registered Dietitian Nutritionists (RDN), we will help you gain control of your health and wellness to reach your full potential.

You can watch this short video to learn more about KORR’s technologies, benefits, and how the testing is administered.

This service is only available in our Downingtown, PA office

Who Can Benefit?

Weight Loss

Understand exactly how much energy your body needs to lose weight without slowing down your metabolism.

Your unique results sheet with help you quantify energy balance to reach your goals much quicker.

Metabolic Reset

Best for those with a history of yo-yo dieting, a chronic energy deficit, and are struggling to lose weight.

Understand the science behind dieting and why your metabolism may be suffering.


Best for those athletes looking to enhance their performance to reach their highest potential.

Maximize training, enhance performance, and recover better through proper fueling and nutrition habits.

How it Works

REEVUE is a direct oxygen measurement, calculating oxygen exhaled to calculate caloric burn. Using indirect calorimetry, the “gold standard” for metabolic rate, the chamber is able to accurately measure the ratio of oxygen consumption to exhalation, to analyze metabolism.

Benefits of Metabolic Testing

  • Establish a minimum number of calories your body needs to function at complete rest, without slowing down your metabolic rate.
  • Determine if your chronic dieting or history of significant weight fluctuations has influenced the efficiency of your body.
  • Better understand your total energy needs on a day of exercise compared to a rest and recovery day.
  • Eliminate use of standard calculations for estimated energy needs.
  • Faster physical results, including weight loss, gain, or body recomposition.

What To Expect

Preparing for your test:

This non-invasive test takes about 10-15 minutes. You’ll be asked to sit back, relax, and breathe. We will use a disposable MetaBreather mouthpiece, which uses a one-time value to measure inhalation and exhalation.

  • Avoid eating or drinking 4-5 hours before testing
  • Avoid exercise the day of testing
  • Avoid stimulants, such as caffeine, the day of testing (or at least 8 hours prior).
  • Avoid over-the-counter medications or dietary supplements the day of testing.
  • Wear comfortable clothes

Your Results

After completing the test, you will get a full report, calculating your total energy burn throughout the day. You can use this report to work with your Registered Dietitian and other healthcare providers to understand your metabolism better and create a customized treatment plan.


Insurance | Just Testing Packages | Testing Packages + Nutrition Counseling


You may be eligible for insurance reimbursement. Indirect calorimetry uses the CPT code #94690 and is covered by Medicare and many other insurance providers. For more information on your insurance plan, reach out to your insurance company directly. We will provide you with a Superbill that can be used to submit for reimbursement to your insurance company. You can then get reimbursement from your insurance company.

Just Testing Packages

One Time


3 Times

$119.99 per test

20% Off

6 Times

$89.99 per test

40% off

Testing Packages + Nutrition Counseling

You can enhance your nutrition counseling session by adding metabolic testing. Enjoy this discounted rate. Please note to get this discounted rate, you must be actively working with one of the dietitians.

One Time



At this time this testing is only available at our Downingtown, PA location.

Once purchased – It is time to get you scheduled. You can head to the online scheduler. You will select the PRE-PAID METABOLIC TESTING option. Or you can call our office at 602-770-7611 to get on the schedule. Need assistance, contact us.


Testing Questions

The test is 10-15 minutes long. We have a quite room that you can relax in while the test is being conducted.

The appointment is scheduled for 30 minutes. Upon the completion of the testing, a staff member will go over your test results with you.

In order to find a true resting metabolic rate, your body will need to be as relaxed as possible. Exercising, caffeine, and digestion could alter the results of the test due to increased metabolic activity.

Metabolic adaptation takes some time to change. For best results, test every 4-6 weeks.


Results can be seen as soon as 1 month. It’s important to give your body time to adjust to the lifestyle changes that are being made. Testing every 4-6 weeks will give you a good idea if the changes you have implemented are working.

If results aren’t seen in 3 months, it’s best to meet with a registered dietitian or other medical provider to see if additional action needs to be taken.

Athlete Performance

Nutrition is a key component to performance. As a result, testing the metabolic rate is a great addition to any training plan to understand your minimum energy requirement prior to training sessions. This will help to optimize training to help reach your max potential.