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Body Composition Scan: The DEXA Gold Standard

A DEXA body composition scan measures your body fat percentage, lean muscle by region, and visceral fat with ±1–2% accuracy, in about 10 minutes, without a referral. This page covers what it costs, how it stacks up against InBody and Bod Pod, and where to book.

Medically reviewed by Dr. Sarah Martinez, MD · Updated August 19, 2026

The short answer

A body composition scan tells you what your weight is made of: fat, muscle, and bone. DEXA is the gold-standard way to measure it, a 10-minute, low-radiation scan accurate to ±1–2% body fat.

Cash-pay scans typically run $99–$250, no doctor's referral needed, and most clinics take HSA/FSA. Your report covers body fat percentage, lean muscle per limb, and the visceral fat a bathroom scale can't see.

What a Body Composition Test Measures

A DEXA body composition scan passes two low-dose X-ray beams through your whole body and separates every pixel into fat, lean tissue, or bone. Because it images rather than estimates, your report is specific in a way no scale or handheld device can match:

  • Total and regional body fat percentage: how much fat, and where it sits.
  • Lean muscle mass by segment: each arm, each leg, and trunk, so you can spot imbalances and see whether training (or a GLP-1) is costing you muscle.
  • Visceral fat rating: the metabolically risky fat around your organs that a mirror or scale can't show you.
  • Android/gynoid ratio: your fat distribution pattern, a marker tied to metabolic health.
  • Bone mineral density, as a bonus reading from the same pass. For dedicated osteoporosis screening, see the bone density test.

You lie still on an open table, fully clothed, for about 10 minutes. Most clinics deliver the full report within 24 hours.

DEXA vs InBody, Bod Pod, and Smart Scales

Every gym and bathroom now offers a body-fat number. The differences are in how that number is produced, and how much it moves for reasons that have nothing to do with your body:

Method How it works Typical accuracy Regional detail
DEXA scan Dual X-ray imaging of fat, lean, and bone tissue ±1–2% body fat Per-limb lean mass, visceral fat, bone density
Bod Pod / hydrostatic Whole-body density via air or water displacement ±2–3% One overall number, no regional breakdown
InBody / BIA scales Electrical current estimate (bioelectrical impedance) ±5–8%, swings with hydration and meals Estimated segments, hydration-dependent

BIA devices are fine for a rough trend line. But if you're making decisions off the number (cutting, bulking, tracking a medication), DEXA is the reference method the other devices are validated against. See the full comparison.

Body Composition Scan Cost

Each clinic sets its own price. Cash-pay DEXA body composition scans typically run $99–$250 depending on the location and what's bundled, while hospital imaging departments often charge $300 or more for a comparable scan. Many clinics offer add-ons on the same visit: bone density, VO2 max testing, and resting metabolic rate.

  • No referral needed. You book directly with the clinic and walk in.
  • Not covered by insurance. Wellness body composition scans are out-of-pocket; insurers reserve DEXA coverage for medically indicated bone density testing.
  • HSA/FSA eligible at most clinics.

Booking through Dexascans.com adds no fees. The price below the clinic's name is what you pay.

How Often Should You Rescan?

Every 3–4 months works well for most people. Fat loss and muscle gain are slow processes, so scanning more often than 6–8 weeks rarely shows meaningful change. Quarterly scans are enough to steer a training block, a cut, or a medication.

For clean comparisons, repeat scans at a similar time of day, in a similar hydration state, ideally on the same machine. One scan is a snapshot; the trend line is where the value is.

On a GLP-1? Track the Muscle, Not Just the Scale

Trial data show that a substantial share of the weight lost on GLP-1 medications like semaglutide and tirzepatide is lean mass, not fat: roughly 40% of it in the STEP 1 body-composition sub-study. The scale can't tell you which one you're losing. A body composition scan can, and a baseline before you start plus a follow-up every 8–12 weeks lets you catch muscle loss early and correct it with protein and resistance training.

Full breakdown in our doctor-reviewed guide to peptides for weight loss.

Body Composition Analysis Near Me

Body composition is the scan nearly every clinic in our directory runs; it's what DEXA clinics are built around. Browse your state to compare verified locations, addresses, and prices:

Or jump straight to the full directory of DEXA scan locations and pick the clinic nearest you:

Find a Location & Book (opens in a new tab)

Need a Bone Density Test Instead?

Same machine, different scan. If you're here for osteoporosis screening, T-scores, or Medicare coverage, that's the bone density test. Many clinics run both in one appointment if you want the complete picture. And if you're new to DEXA entirely, start with what a DEXA scan is and how it works.

Medically reviewed by Dr. Sarah Martinez, MD

Body Composition Scan: FAQ

What is a body composition scan?

A body composition scan measures what your weight is actually made of (fat, lean muscle, and bone) instead of just the total number on the scale. The gold-standard method is DEXA, or dual-energy X-ray absorptiometry: a 10-minute, low-radiation scan that reports your total and regional body fat percentage, lean muscle mass in each limb, visceral fat around your organs, and bone mineral density in one pass.

How accurate is a DEXA body composition scan?

DEXA is considered the gold standard for body composition testing, with accuracy of ±1–2% for body fat measurement. Bioelectrical impedance devices (InBody, smart scales, handheld testers) estimate composition from how electricity flows through your body and can vary by 5–8% depending on hydration, food intake, and time of day. DEXA measures tissue directly with X-ray, which is why researchers and sports-medicine clinics use it as the reference method.

How much does a body composition scan cost?

Each clinic sets its own price. Cash-pay DEXA body composition scans typically run $99–$250 depending on the location and whether you add bone density, VO2 max, or RMR testing, while hospital imaging departments often charge $300 or more for a comparable scan. Most clinics accept HSA/FSA payments, and no insurance paperwork is involved.

Do I need a doctor's referral for a body composition scan?

No. Body composition DEXA scans are wellness scans, so you book directly with the clinic without a physician's order. That's different from a bone density DEXA billed to insurance, which usually does require a doctor's referral.

Does insurance cover body composition scans?

Generally not. Body composition scans for fitness and wellness purposes are paid out of pocket, since insurance reserves DEXA coverage for medically indicated bone density testing. The good news: most scans are HSA/FSA eligible, and cash prices at independent clinics are far below hospital imaging rates.

How often should I get a body composition scan?

Every 3–4 months is the sweet spot for tracking real change. Getting scanned more frequently than 6–8 weeks won't show significant differences for most people, because fat loss and muscle gain are slow processes. Scan at a similar time of day, in a similar hydration state, ideally on the same machine, so your comparisons are clean.

What does a DEXA body composition report include?

Your report breaks down total body fat percentage and fat mass, lean muscle mass by body region (each arm, each leg, and trunk), visceral adipose tissue (the fat around your organs that no scale can show), your android/gynoid fat distribution ratio, and bone mineral density. Most clinics deliver the report within 24 hours, and many review it with you on the spot.

How should I prepare for a body composition scan?

Wear comfortable clothing without metal (athletic wear is perfect), stay normally hydrated, and avoid heavy exercise on the morning of your scan. No fasting is required. For repeat scans, book a similar time of day so your results are comparable.

Is a DEXA scan safe?

Yes. The radiation dose is extremely low, about a tenth of a chest X-ray or less than a day of natural background radiation, which is why quarterly tracking scans are considered safe for healthy adults. Tell the technologist if you are or might be pregnant.

DEXA vs Bod Pod vs hydrostatic weighing — which is best?

All three are legitimate lab-grade methods, but they measure differently. Bod Pod (air displacement) and hydrostatic (underwater) weighing estimate your overall fat percentage from body density, which gives you a single number with no regional breakdown. DEXA images your whole body, so it's the only one of the three that tells you where the fat and muscle are: per-limb lean mass, visceral fat, and bone density. For tracking training progress or muscle retention on a GLP-1, that regional detail is the point.

Medical Disclaimer: The information provided on this website is for general informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. DEXA scan results should be interpreted by a qualified healthcare professional.

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