Microlife MedGem FDA-Cleared Indirect Calorimeter
Accurate Measurement of Resting Metabolic Rate (RMR) for Individualized Health & Nutrition
​The Microlife MedGem is an FDA 510(k)-cleared, Class II medical device that provides a clinically validated measurement of Resting Metabolic Rate (RMR) using indirect calorimetry. This handheld device directly measures oxygen consumption (VOâ‚‚) to determine a patient’s unique metabolic needs, ensuring accurate, science-backed assessments for weight management, clinical nutrition, and metabolic health.
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With its easy-to-use design, the MedGem delivers precise results in just a few minutes, making it an essential tool for physicians, registered dietitians, bariatric specialists, and other healthcare providers.
Providing you with the best medical devices for accurate RMR measurement
Proven Clinical Accuracy
MedGem Analyzer Software
Insurance Reimbursement
​The MedGem’s accuracy has been validated against research-grade metabolic carts and hospital-based calorimeters, confirming its superior reliability compared to estimation equations (e.g., Harris-Benedict or Mifflin-St Jeor).
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Used in Nationally Recognized Programs – The MedGem played a key role in assessing metabolic changes in contestants from "The Biggest Loser™".
Dr. Robert Huizenga, Associate Professor of Clinical Medicine at UCLA and Medical Advisor to the show, stated:
“We chose to use the MedGem device based on its accuracy in comparison to other indirect calorimeters.”
​The MedGem Analyzer Software enhances patient assessments by storing and analyzing RMR data to create customized nutrition and weight management plans.
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Key Features:
✔ Personalized Nutrition & Activity Plans – Uses RMR data along with occupational level, sleep schedule, and weight goals to tailor recommendations.
✔ Comprehensive Patient Reports – Includes RMR comparisons, normative metabolic ranges, and educational resources to promote self-management of diet and exercise.
✔ Clinician’s Summary Report (1-Page) – Provides a detailed overview of VO₂, RMR, BMI, body fat percentage, and treatment recommendations.
✔ Windows-Based Software – Can be run on Mac computers using Parallels Software
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Many insurance providers, including Medicare and private payers, cover indirect calorimetry for metabolic, cardiovascular, and pulmonary conditions.
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Medicare Reimbursement Rate (Colorado Average): $63
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Typical Reimbursement Range:
$60 – $80 (Total: Patient Co-pay + Insurance) -
CPT Code: 94690 – Oxygen uptake, expired gas analysis (rest, indirect)
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Click here for applicable CPT codes for metabolic testing.
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Licensed clinicians typically charge $70-$90 per RMR measurement, making this a cost-effective and revenue-generating service.
Choose the Best Purchase Option for Your Practice
1
MedGem System Kit
(Best Long-term Value)
Ideal for clinics performing frequent metabolic testing
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✔ MedGem Indirect Calorimeter –
FDA-cleared, with a 1-year warranty
✔ One 21-pack of disposable mouthpiece filters and nose clips
✔ MedGem Analyzer Software (Windows-based)
✔ Lightweight carrying case for portability
✔ Metabolic Rate & Weight Management Guide
✔ Marketing Materials Kit (trifold brochures included)
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Lowest per-use cost – No sensor replacement needed! Simply purchase additional mouthpiece filters and nose clips to continue testing.
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Additional Mouthpiece Filters and Nose Clip Packs:
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21-pack: $299
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Bulk Discounts Available: Contact us for current promotions and special pricing on multi-box purchases
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Extended Warranty Option
Upgrade to 2 years for $499
MedGem International Kit
(International Customers only)
Designed for MedGem International Customers
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✔ MedGem Indirect Calorimeter –
FDA-cleared, with a 1-year warranty
✔ International plug adapter kit
✔ MedGem Analyzer Software (Windows-based)
✔ Lightweight carrying case for portability
✔ Metabolic Rate & Weight Management Guide
✔ Marketing Materials Kit (trifold brochures included)
*Please note that disposable mouthpieces and noseclips must be purchased as they are not included in this kit
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Additional Mouthpiece Filters and Nose Clip Packs:
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21-pack: $299
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Bulk Discounts Available: Contact us for current promotions and special pricing on multi-box purchases
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Extended Warranty Option
Upgrade to 2 years for $499
3
COVID-19 Update
The MedGem and BodyGem filters are made with 3M Filtrete medical-grade material to ensure the highest standard of safety and performance.For optimal hygiene and accurate results, a new mouthpiece filter and nose clip must be used for every measurement.
Important Precautions:
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Do not remove the flow tube—this could expose sensitive sensors that may be damaged by water or cleaning solutions.
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Avoid submerging the device in water or allowing any liquid to enter the display window, sockets, or flow tube openings.
Device Repair & Recalibration
If your MedGem device requires evaluation or recalibration after the warranty expires, we offer a repair service for $99 plus return shipping.
For Questions, Orders, or Support:
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Call: 713-858-2445
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Email: nora.neely@microlifeusa.com
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Complete the online Contact Form for a response via email or phone
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To order a BodyGem or MedGem System Kit, complete the Order Form and call us with payment information
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Purchase orders accepted from companies with a net-30 credit account​
Please note that our previous phone number (303-274-2277) and fax number (303-274-2244) have been discontinued. Kindly use the updated contact information provided above.
