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Know your body.
Get DexaFit Orange County.

Understand your fat, muscle, metabolism, and fitness in one visit, and leave knowing exactly how to train, eat, and improve.

Special offers available now, view offers ↓
Get DexaFit Orange County

Trusted by Orange County locals serious about their health

DexaFit results app view DexaFit Orange County body composition testing

How It Works

Three Tests. Clear Answers.

Each test is designed to give you data your scale, wearable, doctor, or trainer cannot. One visit. The complete picture.

DEXA Body Composition
1

DEXA Body Composition

See fat, muscle, and bone, exactly where they're changing. The clinical picture your scale can't show.

±2%
Measurement accuracy, versus 10%+ error from smart scales and bioelectrical impedance devices
VO2 Max Test
2

VO2 Max Test

The strongest predictor of how long, and how well, you'll live. Measured directly, not estimated by a wearable.

5×
Mortality gap between the least-fit and most-fit individuals. JAMA 2018, 122,007-patient study
RMR Metabolic Test
3

RMR Metabolic Test

Know exactly what your body burns before you move a muscle. Build nutrition on real numbers, not generic estimates.

200+
Calorie difference between estimated and measured RMR, enough to stall any weight loss or gain plan

WHO'S IT FOR

EVERYONE.

Lose Weight

Stop guessing.
Start knowing.

Visceral Fat Risk
+55%
Higher cardiovascular risk from elevated visceral fat. Your scale can't see it.
Weight loss & GLP-1 users

You don't have a weight problem. You might have a composition problem.

Your scale can't tell you if you lost fat or muscle. We can.
On GLP-1? Roughly 1 in 3 pounds lost is lean mass. Know if you're in that range.
Smart scales carry a 10%+ error margin. DEXA is the clinical gold standard.
Recommended tests DEXA Body CompositionRMRVO2 Max
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Live Longer

Wearables measure signal.
We measure structure.

VO2 Max Mortality Edge
5×
Least-fit vs. most-fit mortality gap. JAMA 2018, Mandsager et al.
Longevity & health optimization

You track the signals. Now add the structural layer.

Visceral fat carries 55% higher cardiovascular risk. Your BMI cannot see it. We can.
VO2 Max outpredicted smoking, diabetes, and hypertension in a 122,007-patient study.
Your year-old test is interpreted with more intelligence today than when you took it.
Recommended tests DEXA Body CompositionVO2 MaxRMRBone Mineral Density
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Build & Perform

Train with precision.
Measure with it too.

Lean Muscle Precision
±2%
DEXA regional lean mass accuracy. No wearable or scale comes close.
Athletes, gym-goers & competitors

Because 'Good Enough' doesn't win. Measure the margin.

VO2 Max: the performance ceiling your wearable estimates. We measure it directly.
Regional lean mass by limb and trunk, the clinical edge your competition doesn't have.
RMR tells you what your body actually burns. Fuel training with data, not estimates.
Recommended tests DEXA Body CompositionVO2 MaxRMR
Get DexaFit Orange County
Women's Health

Your body is changing.
The data explains why.

Lean Mass Maintained
96%
DexaFit members preserved lean mass, even through hormonal change.
Perimenopause & hormonal change

The most important changes are the ones you can't see.

Menopause shifts fat to visceral. No mirror or BMI catches it. DEXA does.
Bone density decline accelerates around menopause. An 8-minute test gives you a number you can act on.
Your metabolism changes in perimenopause. RMR testing shows exactly how much.
Recommended tests DEXA Body CompositionBone Mineral DensityRMR
Get DexaFit Orange County
Men's Health

What gets measured
gets managed.

Visceral Fat Risk
+55%
Higher cardiovascular risk from elevated visceral fat, common in men with normal BMI.
Men's health & performance

The midsection that hides on the scale shows up on DEXA.

Men store fat viscerally, the dangerous kind around your organs. DEXA quantifies it directly.
Lean mass declines roughly 1% per year after 30. Know your starting line before it slips.
Cardio fitness predicts longevity more than smoking or BMI. VO2 Max tells you where you stand.
Recommended tests DEXA Body CompositionVO2 MaxRMR
Get DexaFit Orange County
Just Getting Started

You don't need a goal.
You need a baseline.

Test Duration
8min
One test. Fat, muscle, bone, all measured.
General wellness & first-timers

8 minutes gives you a complete picture of your body.

No specific goal needed. One DEXA baseline makes every health decision smarter.
Your annual physical raises questions. DexaFit answers them, no referral, no wait list.
Start here. Training, nutrition, goals, everything makes more sense after.
Recommended tests DEXA Body CompositionRMR
Get DexaFit Orange County

☀️ Summer Savings

Special Offers

Two ways to start knowing your numbers. Both offers are available to book now.

Best Value · $120 Off

Full DexaFit Bundle

The complete owner's manual for your body.

$300 $420
Save $120
  • DEXA Body Scan — fat, muscle & bone density
  • VO2 Max Test — your cardiovascular engine size
  • RMR Metabolic Test — calories burned at rest
  • Results in the DexaFit AI app — personalized recommendations
  • Expert results walkthrough — leave with a clear plan
Two Together

Couples & Fitness Buddies

Two people, one appointment. Better together.

2 in 1
Book two in one slot
  • Both get tested together — same appointment, no extra scheduling
  • DEXA Body Composition — for each person
  • Compare your baselines — track progress side-by-side
  • Individual results for each — personalized insights, not shared
  • Expert walkthrough — results reviewed for both, together

Reserve Your Spot

Pick your offer & time

Choose your offer, then pick a time that works for you.

Full Bundle: DEXA + VO2 Max + RMR for $300 (reg. $420, save $120). Or bring a friend with Two Together, one appointment for both of you. Pick an option below. Questions? Call (949) 490-6750.

5-Star Reviews

Orange County stories. Real results.

★★★★★

I got a DEXA scan here and the whole process was very easy. Sean was great — super friendly, enthusiastic, very thorough and knowledgeable.

L
Lillian Malik
Google Review
★★★★★

The staff member who helped us was very knowledgeable and made the entire experience comfortable and not intimidating at all. She took the time to clearly explain our results.

P
Pamela Yoma
Google Review
★★★★★

Super friendly staff, professional experts. The DEXA scan is a game changer and getting a VO2 Max and RMR test done will help nail my nutrition leading into my next race.

J
Jeff Tobin
Google Review
★★★★★

Really highlighted areas I need to focus on — specifically my lean muscle mass vs. body fat percentage. Had an amazing experience!

D
Daniel Alarcon
Google Review
★★★★★

Had an incredible experience at DexaFit OC! I went for both the DEXA scan and VO2 Max test and I'm so glad I did! The staff was extremely professional and friendly!

K
Karla Reed
Google Review
★★★★★

The staff was amazing and were so logical and intelligent! They made me feel very comfortable and their ability to explain my exam in simple terms made it easy.

V
Victor Quezada
Google Review
★★★★★

Sayuri and Sean were efficient, professional and friendly. Every step of the DEXA Scan and VO2 Max tests was clearly explained. Highly recommend DexaFit OC!

J
Julieta Hettmann
Local Guide
★★★★★

Sign up was simple and the scan took just a few minutes. I received my results on their app instantly. Ty was so helpful and knowledgeable!

A
Alyssa Pangan
Google Review

Got Questions

Common Questions

You'll arrive, check in, and move through your selected tests in a single visit. The DEXA scan takes about 8 minutes and requires no preparation beyond removing metal objects, with a total appointment of around 30 minutes. VO2 Max and RMR each take about 15 minutes to administer. At the end of your appointment, a staff member walks you through your results and explains what each number means for your health and goals.
All three tests together take about an hour and a half or less from start to finish. On their own, a VO2 Max appointment runs about 45 minutes and an RMR appointment about 30 minutes. Plan for around a 30-minute appointment even for a standalone DEXA to allow time for check-in and your results review.
For the DEXA scan, avoid eating a large meal or intense exercise in the 3 hours before. For VO2 Max and RMR, avoid caffeine and significant physical activity for at least 4 hours prior. Both tests measure your body at a baseline state and are affected by recent stimulants or exertion. You'll receive a detailed preparation guide by email after booking.
DEXA uses a low-dose dual-energy X-ray to separate your body into three tissue types: fat mass, lean muscle mass, and bone mineral density. It reports results regionally, arms, legs, trunk, and android/gynoid zones, so you see not just how much fat you carry, but where. Visceral fat (the metabolically active fat around your organs) is flagged separately. Total radiation exposure is roughly equivalent to a cross-country flight.
You wear a fitted mask and perform a progressively harder protocol on a stationary bike or treadmill. The mask captures the oxygen you inhale and the carbon dioxide you exhale at each intensity level. The test ends when you reach your maximum aerobic effort. Unlike wearable estimates, this is a direct measurement, the same protocol used by elite sports teams and clinical research.
Your results load into the DexaFit AI app immediately after testing. A staff member reviews them with you in person before you leave, walking through what each metric means and how you compare to age- and sex-matched norms. Your data stays in the app for future reference and is available to share with your doctor, trainer, or dietitian.
Most people retest every 3 to 6 months when actively working toward a goal, weight loss, muscle gain, or performance improvement, and annually for a general health baseline. Retesting is where DexaFit delivers its greatest value: seeing exactly how your body composition, cardiorespiratory fitness, and metabolism have changed in response to your efforts.
Yes. DEXA uses very low-dose X-ray. The radiation exposure is minimal, roughly comparable to sitting outside for a few hours. The scan is non-invasive, painless, and takes about 8 minutes. It is not recommended for individuals who are pregnant, as a precaution.

Visit Us

DexaFit Orange County

Address
18001 Sky Park Circle, Suite K
Irvine, CA 92614
Email
oc@dexafit.com
Phone
(949) 490-6750