Total body fat %
Whole-body fat mass as a percentage of total weight — the most reliable body fat measurement available.

Wellness · Austin, TX
The medical gold standard for tracking body fat, lean muscle, visceral fat, and bone density — in a single 10-minute scan with same-day results at our boutique medical spa in Westlake Hills and Bee Cave.
What it is
A DEXA (Dual-Energy X-ray Absorptiometry) scan uses a low-dose x-ray to distinguish fat, lean muscle, and bone — with precision a scale, smart-mirror, InBody, or bioimpedance device simply cannot match. It is the same technology hospitals, research labs, and pro athletes use to measure body composition.
At Body Tonic RX, we use DEXA to give our weight-loss, HRT, peptide, and longevity patients a clear baseline — and the only honest way to confirm that what you're losing is actually fat, and what you're gaining is actually muscle.
What you measure
Whole-body fat mass as a percentage of total weight — the most reliable body fat measurement available.
Deep abdominal fat surrounding your organs — the strongest predictor of metabolic and cardiovascular risk.
Skeletal muscle by region (arms, legs, trunk). Track gains on training, HRT, or peptide protocols.
T-score and Z-score for spine, hip, and whole body — gold-standard osteoporosis and osteopenia screening.
Left vs. right muscle balance — identify asymmetries that contribute to injury or imbalanced training.
Resting metabolic rate estimated from lean mass — your true daily calorie baseline.
Who it's for
Confirm fat loss vs. muscle loss on GLP-1, semaglutide, or tirzepatide programs.
Document lean mass changes on testosterone, hormone optimization, or BPC-157 / Ipamorelin protocols.
Quantify training response, side-to-side symmetry, and recovery progress.
Baseline visceral fat, sarcopenia risk, and bone density before they become problems.
Osteoporosis and osteopenia detection for peri- and post-menopausal women, men over 50, and at-risk patients.
Track muscle re-growth and regional balance after surgery or extended immobility.
Why DEXA
Clinical-grade accuracy — the medical gold standard for body composition
Whole-body and regional breakdown in a single scan
Open table — no claustrophobic tube or chamber
Same-day, easy-to-read report
Pairs with HRT, peptide, weight-loss, and longevity programs
Optional provider consult to build your plan
The visit
The scan is quick, painless, and completely open — no enclosed tube. You'll leave with a same-day report and the option to review it with your provider.
Pairs with
A DEXA baseline before — and a follow-up scan 3–6 months into — your wellness program is the most honest way to confirm progress.
FAQ
DEXA (Dual-Energy X-ray Absorptiometry) is the medical gold standard for measuring body composition and bone density. A low-dose x-ray distinguishes fat mass, lean muscle mass, and bone mineral content with clinical precision — far more accurate than scales, calipers, or bioimpedance.
The scan itself takes about 6–10 minutes. Plan on 20–30 minutes total including check-in, a brief intake, and a same-day results walkthrough with your provider.
Yes. A whole-body DEXA scan uses extremely low-dose ionizing radiation — roughly equivalent to a few hours of normal background exposure and a small fraction of a single chest x-ray. It is not recommended during pregnancy.
Wear comfortable clothing free of metal (zippers, underwires, large buttons). Avoid calcium supplements for 24 hours before. Stay normally hydrated and avoid heavy meals immediately before the scan. Bring a list of current medications.
For body composition tracking on a weight-loss, HRT, or peptide protocol, every 3–6 months is typical. For bone density monitoring, most patients repeat every 1–2 years based on baseline T-score and clinical risk.
Single scans and discounted scan packages (ideal for tracking progress over time) are available at Body Tonic RX. Contact our team for current pricing and member savings.
Most wellness and body composition scans are self-pay. Bone density (osteoporosis) screening may be covered by insurance when medically indicated — we are happy to provide a superbill you can submit to your carrier.
Ready to know your numbers?
Single scans and discounted multi-scan packages available. Members enjoy preferred pricing across the wellness menu.
Keep exploring
FDA-approved GLP-1 therapy for steady, sustainable fat loss.
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Dual GIP/GLP-1 agonist for accelerated weight loss results.
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Triple-agonist peptide for advanced metabolic optimization.
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BPC-157, Ipamorelin, GHK-Cu and more — provider supervised.
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Hydration, immunity, beauty, recovery, and NAD+ infusions.
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Get in touch
Reach out about treatments, telehealth, or scheduling — a member of our team will be in touch shortly.