DEXA Body Composition Scan
The gold standard for measuring what a scale can't: exact body fat percentage, lean tissue, visceral fat, and bone mineral density — with regional detail down to each arm and leg.
Why DEXA instead of BMI?
BMI is a single ratio of height to weight — it can't tell the difference between someone who's lean and muscular and someone who's carrying excess fat. DEXA uses low-dose x-ray to physically separate fat, lean tissue, and bone, so you get an actual measurement instead of an estimate.
Built for tracking change
A DEXA scan is most useful as a baseline you repeat. If the scale isn't moving but your body is changing, DEXA is what shows it — fat loss and muscle gain can happen at the same time and cancel each other out on a scale.
Protecting muscle on GLP-1s
On a GLP-1 medication, as much as 30% of weight lost can be lean mass — exactly what you want to keep. Regional DEXA data shows whether you're losing fat or muscle, limb by limb, so you can adjust training and protein intake accordingly.
A 7-minute scan, a 30-minute visit
- Lie still on the scanning table for about 6–11 minutes while the scanner passes over your body.
- No fasting required, though we recommend avoiding a large meal in the 1–2 hours beforehand.
- Wear workout or casual clothing with minimal metal — small zippers and buttons are fine.
- Remove shoes, jewelry, belts, and anything with significant metal before scanning.
- Start with a baseline, then re-scan every 12–30 weeks for progress checks, or annually for maintenance.
Limitations to know before booking
You cannot be pregnant or trying to become pregnant to receive a DEXA scan.
- Maximum weight for an accurate scan is approximately 350 lbs.
- You need to be able to lie still on your back for 6+ minutes.
- Avoid GI contrast or radionuclide procedures within 7 days of your scan.
- Around 250 lbs+, a left-arm or visceral fat reading may not be guaranteed due to scanner limitations.
Radiation exposure is comparable to about 4 bananas or a cross-country flight — well below a standard chest X-ray. More on DEXA safety →
Ready to see your numbers?
DXA Scans are FSA/HSA eligible. New clients receive a free Styku 3D scan with their first booking.