Questions, answered plainly.

DEXA (dual-energy X-ray absorptiometry) uses two low-dose X-ray energies to distinguish fat, lean soft tissue and bone mineral. It is a long-established method for measuring body composition, and it reports results region by region rather than as a single whole-body estimate.

Total and regional body fat, lean mass by limb and trunk, an estimate of visceral fat, bone mineral content and density, left-to-right differences, and appendicular lean mass index (ALMI).

Setup and scanning together take roughly ten minutes of your appointment. [PLACEHOLDER — exact scan duration pending confirmation from the scanner specifications. Do not publish a specific figure until verified.]

Thirty minutes. Approximately ten minutes for setup and scanning, and around twenty minutes reviewing your results with an expert.

DEXA uses low-dose X-ray technology, so there is a small radiation exposure. [PLACEHOLDER — pending confirmation. Effective dose figures and any comparison must come from the scanner manufacturer specifications and be reviewed by a qualified professional before publication.] If you are pregnant or think you may be, do not book a scan; talk to your physician first.

Comfortable clothing free of metal. Zips, underwire, buckles, clasps and heavy hardware can interfere with the scan, so leave them out where you can. You stay fully clothed throughout.

[PLACEHOLDER — pending confirmation of Xtheory protocol.] Consistency matters more than the specific rule: whatever you do before your first scan, repeat it before the next one so the comparison is fair.

Wear metal-free clothing, arrive a few minutes early, and try to keep the conditions similar each time you scan — same time of day, similar hydration and similar training the day before. [PLACEHOLDER — full preparation protocol pending confirmation.]

You sit down with an expert and go through your report together. You leave with your results, a clear sense of which numbers matter for you, and a digital copy you keep.

Yes. Every Xtheory appointment includes the review — it is the point of the appointment, not an upsell. We do not offer a scan-only option.

Often enough to see a real trend, rarely enough that the change exceeds the noise. Many people re-scan every few months when actively working toward a composition goal. We will suggest a sensible interval for your situation during your review.

No. Xtheory measures body composition and explains what your measurements show. We do not diagnose, treat or manage medical conditions, and nothing in your review replaces advice from your physician. If your results raise a clinical question, we will tell you to take it to a doctor.

[PLACEHOLDER — eligibility not yet confirmed. Do not publish a claim about HSA/FSA acceptance until it has been verified with a qualified tax or benefits advisor.]

Yes. Every booking confirmation includes a private link where you can reschedule or cancel yourself, up to 24 hours before your appointment. Inside 24 hours, contact us and we will help where we can.

[PLACEHOLDER — pending review] Cancel or reschedule online up to 24 hours before your start time. Within 24 hours, get in touch and we will work it out with you.

Walnut Creek, California. [Xtheory Walnut Creek Address] — full address, parking and arrival details are included in your booking confirmation.