BodyGem MedGem Indirect Calorimetry Device Support

This page will help you get ready to start providing RMR measurements and help you market your new service.

Click here for a training demo video.

.User Manuals

BodyGem User Manual

MedGem User Manual



BodyGem and MedGem Measurement Resources:

Click here for a printable 1-page Analyzer Software Questionnaire

Click here for a printable 1-page measurement protocol checklist in PDF

Using The BodyGem Analyzer Software Questions And Answers FAQ.

BodyGem Error Code Explanations

Your Personalized Weight Management Program

Overcoming Barriers To Weight Management Success

Calorie Expenditure Worksheet

Factors The Affect Metabolism

Metabolism 101



Understanding the numbers on the Analyzer software and printout.

RMR accounts for 70-75% of the calories a person burns each day.

The BodyGem Analyzer software determines how active their lifestyle is based on their work activity levels, numbers of hours worked, sleep hours, etc., and then adds those calories to compute their Daily Calorie Expenditure

Their Daily Calorie Expenditure is RMR + Lifestyle.  This how many calories they will burn without exercise.

Their Daily Calorie Budget is RMR + Lifestyle – Weight Goal.

So the difference is based on their weight loss goal.

If someone has an RMR of 1,500 calories + their active lifestyle burns 400 additional calories, their Daily Calorie Expenditure would be 1,900

If their goal is to lose one pound a week, it subtracts 500 calories per day, so their Daily Calorie Budget is 1,400

Then if they exercise that day and burn 200 calories, their Total Calorie Expenditure would be 2,100

They can eat their planned Daily Calorie Budget and let those exercise calories that they burn help them lose weight more quickly.

Or they can add 200 calories to their Daily Calorie Budget to maintain the 500 calorie imbalance.


Inserting a measured body fat measurement

The Analyzer software estimates the clients body fat percentage, and it’s +/- 2% of DEXA on clients that have a BMI of 28 and higher.

The next release of Analyzer software will allow you to insert your measured body fat percent.

Until then, you can use the Note feature to insert a note on the clients measurement report, such as “Your measured body fat percent is 18%.”


Computer Adaptor Cable

The serial cable mentioned in the training video is not included in the System Kits, but is available for $50.

Connecting the BodyGem or MedGem to a computer during a test only gives you a few benefits; it allows you to see their tidal flow as their breathing settles in during the test, and it automatically enters the RMR number in the Analyzer software.

The drawback is that you have to test your client near a computer, versus being able to test anywhere.

And some computer USB ports don’t properly sense the device.

bodygem-startTo initialize the BodyGem measurement, simply press the button on the top of the device.

It will do a self-test, and then beep and the light will turn green, when it is ready to start the measurement.

Then in the BodyGem Analyzer software, click on the Enter Measurement for Client box (green box) and simply enter the RMR number into the Analyzer software.




Download the Analyzer software

If you lost your CD or if you don’t have a CD-Rom drive, you can download the software by clicking on this link

Enter your contact information, including the serial# of your device; and you will be given access to the download file.

You will still need to enter your Registration Code from the CD case.  If you don’t have one, contact us.



To access the serial number of your device follow these instructions.

Microlife BodyGem And MedGem Flow Tube

The white label with the model number and serial number is located behind the flow tube.

The mouthpiece filters connect to the flow tube, which slides out of the device.

Hold the device in one hand, and pull on the neck of the flow tube with the other while gently rocking it back and forth, and it will slide out.

The white label is on the inside of the indirect calorimeter.

Do not touch any of the sensors on the top and bottom of the device.

Then slide the flow tube back in, making sure the top and bottom of the flow tube are completely flush with the BodyGem or MedGem device.


BodyGem and MedGem Per-Use System Low Measurement Warning

When you per-use device has only 10 measurements left, it will warn you, so that you can get a Reorder Kit before you run out of measurements.

The Start Button on top of the device will flash yellow and green, and the C-## will appear on the LCD panel, showing you how many measurements you have left.

To bypass the warning, press the Start Button twice to start the initialization process. The Start Button will turn solid green when it is ready.



Using BodyGem and MedGem Analyzer software on an Apple computer

The Analyzer software is a Windows-based program.

To run Analyzer software(or any Windows program) on your Mac, you would need the Boot Camp utility or VMware or Parallels software. You can get more information at


RMR Measurement Marketing:

Marketing Posters and Trifold Brochures

The marketing poster and trifold brochures that came with your system kit will help your clients understand the need for RMR testing.

The posters look great with a black frame from your local arts supply store.
Click here for a PDF of the BodyGem RMR Poster

The tri-fold brochures can be placed in a vertical brochure holder on your reception desk.
Click here for a PDF of the BodyGem Trifold Brochure

You can order additional posters and tri-fold brochures. Posters are $5. Tri-fold brochures are $25 for 50.

If your facility has glass at the entrance, you can have “Get Your Metabolism Tested” lettering painted on the glass to attract the attention of walk-by traffic.

People will pay just to know what their metabolic rate is, as many people believe that they have a ‘slow metabolism“.

One Page Marketing Fliers

To help you market your BodyGem and MedGem metabolic rate testing services, I’ve provided some RMR test marketing materials. You can update these Word documents with your contact information.

Metabolism Matters One Page Flier

Metabolism Matters Info Sheet Flier


MedGem Reimbursement Codes

Click here for a MedGem Reimbursement Codes PDF


BodyGem and MedGem Customer Support:

If you’ve purchased your device from David, call him at 720-431-1461

If you need additional help, contact Customer Support at 1-800-968-1378