Measure Resting Metabolic Rate in minutes with MedGem.
The MedGem is a portable, clinically validated indirect calorimeter designed for bariatric physicians and dietitians who need accurate metabolic data—without complex equipment or long test times.
Better data helps you provide more precise nutritional recommendations for optimal results.
Why Bariatric Patients Stall — Even When They’re “Doing Everything Right.”
Predictive calorie equations can be off by 20–30% or more—especially in patients with obesity, metabolic adaptation, or post-surgical changes.
For bariatric practices, that means:
- Slower weight loss
- Frustrated patients
- Repeated nutrition adjustments
- Lower long-term success rates
MedGem replaces estimates with real metabolic data—so nutrition plans are based on physiology, not averages.
What MedGem Measures
Resting Metabolic Rate (RMR)
Using indirect calorimetry, MedGem measures oxygen consumption to determine a patient’s true energy needs at rest.
- Ideal for pre-op and post-op bariatric patients
- Detects metabolic adaptation
- Supports individualized calorie prescriptions
- Improves patient understanding and adherence
Designed for Bariatric Clinics & Dietitians
Simple. Fast. Clinic-Ready.
- 10-minute test — fits easily into clinic flow
- Portable & handheld — no carts, hoods, or gas tanks
- Minimal training required — RDs and clinical staff can administer
- Clear, actionable results — easy to explain to patients
No complicated setup. No intimidating equipment.
Why Bariatric Doctors & Dietitians Choose MedGem
Clinically Validated
- Backed by validation studies
- Trusted by physicians, dietitians, and academic programs
Improves Patient Outcomes
- Identifies under- or over-prescription of calories
- Helps explain stalled weight loss
- Increases patient confidence in care plans
Supports Reimbursement & Revenue
- Commonly used with metabolic assessment billing
- Creates a high-value, billable service
- Enhances nutrition consult offerings
The MedGem turns nutrition conversations into objective, data-driven discussions, increasing adherence and reducing frustration.
The MedGem indirect calorimetry device is a clinically-validated and FDA 510K-cleared, class II, medical device for measurement of patient resting metabolic rate (RMR).
The MedGem is an easy-to-use, handheld device that accurately measures oxygen consumption (VO2) to determine resting metabolic rate (RMR)*.
Measurements made with the MedGem are easy to administer and provide accurate results in only a few minutes.
Microlife’s WatchWT MedGem device was used to assess metabolic changes in The Biggest Loser™ contestants. “We chose to use the MedGem device based on its accuracy in comparison to other indirect calorimeters.” said Dr. Robert Huizenga, Associate Professor of Clinical Medicine at UCLA and Medical Advisor to The Biggest Loser.
MedGem Analyzer Software
Physicians, nutritionists and other healthcare professionals can provide patients with a more accurate nutritional assessment and individualized weight management program.
With MedGem Analyzer individual measurements can be stored and utilized to develop personalized nutrition & activity plans designed to improve energy balance literacy and patient self-management of daily nutrition, exercise, and other health goals.
The MedGem Analyzer software is a Windows-based program. To run it on a Mac computer, you can use the Boot Camp utility or Parallels software.
MedGem Analyzer Software Features
Create individualized nutrition and activity plans based from the MedGem RMR measurement, occupational level, sleep schedule, and patient weight goals. A MedGem Analyzer Patient Questionnaire is included with MedGem Solution materials.
Comparison between patient’s RMR values and normative metabolic ranges.
Detailed patient education report to improve energy-balance literacy and promote patient self-management.
Clinician’s report (1-page) providing a detailed summary of the V02, RMR, BMI, Body Fat, measurement and patient treatment plan.
Many payers including Medicare, Medicaid, and private insurance companies reimburse Indirect Calorimetry for patients with pulmonary, cardiovascular, and metabolic disease. The Medicare reimbursement rate average is $63 in Colorado.
(CPT 94690) Oxygen uptake, expired gas analysis; rest, indirect.
Click here to see the CPT Codes that apply to metabolic testing.
Rates range from $60 – $80 in total (Pt. Co-pay + reimbursement). CPT Code 94690 (oxygen uptake) is a pulmonary code therefore it is suggested that supporting ICD-9 codes be pulmonary in nature. Licensed clinicians typically charge between $70-90 for a RMR measurement.
The MedGem WatchWT System Kit includes:
♦ MedGem indirect calorimeter with a 2-year warranty
♦ One 21-pack mouthpiece filters and nose clips
♦ MedGem Analyzer software for Windows
♦ A lightweight carrying case
♦ A metabolic rate and weight management program implementation guide
♦ A marketing materials kit with trifold brochures
The sensor does not need to be replaced. To continue providing measurements, all you need is additional mouthpiece filters and nose clips.
A 21-pack of mouthpiece filters and nose clips is $329.
When you purchase two 21-packs, you can get a third 21-pack for 50% off.
You can extend the MedGem System Kit warranty to three years for $499.
Licensed clinicians typically charge between $70-90 for a RMR measurement, so the MedGem Starter Kit allows you to generate between $2,800 – $3,600 in revenue.
If you have a problem with the device after the warranty has expired, you can get it evaluated and recalibrated in our repair facility for $99 plus return shipping costs.
CONTACT US:
Call 720-431-1461 to get pricing and your questions answered.
Or complete the CONTACT FORM and we’ll email you or call you.
If you’re ready to order a BodyGem or MedGem System Kit, complete the ORDER FORM and then call us with payment information.
We accept purchase orders from companies that have a net-30 credit account set up with us.
NOTE: If you’re trying to call Microlife at 303-274-2277 or fax us at 303-274-2244, those phone numbers were discontinued when we moved out of the Golden Colorado office. You can call 720-431-1461 and send faxes to microlife@earthlink.net
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