Resting Metabolic Test · Charlotte, NC
Know Your Burn
Resting Metabolic Rate (RMR)
Do you know your number? Fun fact: most don't! End calorie confusion with an RMR test. This precise testing procedure reveals exactly how many calories your body burns at rest.
15 min
Test duration
±2%
Clinical accuracy
Fasting required
Simple prep
Same day
Digital results
Stop guessing. Start calculating.
Mystery Solved. Know Your Exact Calorie Needs.
Generic calorie calculators use height, weight, and age to estimate your needs — but they can be off by hundreds of calories per day. Your RMR test gives you the real number, measured directly from your breath.
Your Resting Metabolic Rate (RMR) accounts for approximately 70% of your daily energy expenditure, representing the calories needed for essential functions like heartbeat and breathing.
When you understand your RMR, everything changes. You know exactly how much to eat to lose fat without losing muscle, how to fuel a performance goal without overconsuming, and why your current plan might not be working.
Equation-based estimates can miss the target by as much as 40 percent! This precise medical-grade test removes the guesswork and empowers you to reach your goals with total metabolic clarity..
Book your RMR testThe science behind it
What Is an RMR Test?
An RMR test uses indirect calorimetry — the same technology used in clinical and research settings — to measure how much oxygen you consume and how much carbon dioxide you produce at rest. From this data, we calculate exactly how many calories your metabolism burns.
The test is simple: you breathe through a mask or mouthpiece for 15–20 minutes while resting comfortably. No exertion, no needles, no discomfort. The equipment analyzes your breath in real time and produces a precise metabolic measurement.
Unlike online calculators that estimate your RMR based on population averages, this test measures YOUR metabolism directly. Metabolism varies significantly from person to person — even among people with identical height, weight, and age.
Results are available the same day, delivered in a clear clinical report that you can share with your doctor, dietitian, or fitness coach.
Is it right for you?
Who Should Get a RMR Test?
An RMR test is valuable for anyone who wants to take the guesswork out of their nutrition. If any of the following apply to you, a metabolic test could be the missing piece:
Anyone struggling with unexplained weight gain or loss
Fitness enthusiasts wanting to optimize their nutrition
Athletes looking to fuel performance with precision
Those experiencing a weight loss plateau
Anyone on a restrictive or elimination diet
People managing thyroid, hormonal, or metabolic conditions
Anyone who simply wants to know their body better
What you gain
RMR Benefits
Know Your True Calorie Needs
Stop relying on generic calorie calculators. Your RMR reveals your exact daily caloric expenditure so you can eat and train with precision.
Active Caloric Optimization
Use your real metabolic data to optimize nutrition plans, eliminate guesswork from your diet, and finally see results that match your effort.
Metabolic Health Tracking
Establish your metabolic baseline and track changes over time — whether you're cutting, bulking, or maintaining, you'll always know where you stand.
Doctor-Ready Results
Your RMR report is delivered in clinical format — shareable with your physician, dietitian, or trainer the same day as your test.
Weight Management Support
Most weight loss plateaus are caused by metabolic adaptation. Your RMR data gives you and your provider the exact information needed to break through.
Personalized Training Zones
Knowing your resting metabolic rate helps determine your optimal heart rate zones for fat burning, endurance, and peak performance training.
Transparent pricing
RMR test packages
Pair your RMR test with a DEXA scan for the full metabolic picture.
Resting Metabolic Rate
- Precision caloric needs analysis
- Macro target recommendations
- Metabolic efficiency rating
- Comparison to predicted RMR
- Digital results report
3-Session Pack
$83 per session
- 3 × resting metabolic rate tests
- Progress comparison reports
- Trend tracking across sessions
- Digital results each session
- In-person results review
Why Biosum
Considering your
RMR test?
Every RMR test includes an in-person results review with our team. We don't just hand you a number — we help you understand what it means and how to use it to reach your goals.
In-person metabolic results review after every test
Mobile lab — we come to you, no clinical visit required
Same-day digital report, shareable with your provider
Nutritional and fitness guidance available post-test
Jake & Lora
Founders, Biosum
Measure. Motivate. Transform.
Your best self. What's stopping you?
Book your RMR test