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DEXA Scans Explained: What Your Results Mean

DEXA Scans Explained: What Your Results Mean from CrossFit BC. Confused by your DEXA scan report? Here is what body fat %, visceral fat, lean mass, and bone density T-scores actually mean, and what to do next.

Written by:
CrossFit BC Coaching Team

Section:
Health & Lifestyle

Reading time:
10 min

Topics:
DEXA scan, body composition, body fat measurement, bone density, fitness testing, 30-day lifestyle reset

Published:
Friday, April 10, 2026

Last updated:
Friday, August 21, 2026

DEXA Scans Explained: What Your Body Composition Results Actually Mean

This article is part of the CrossFit BC journal, written by the coaching staff who run our classes in Olympic Village, Vancouver. We publish what we teach on the floor: training decisions, recovery, nutrition, and the honest tradeoffs behind them.

Common questions

What does a DEXA scan measure?

A DEXA scan measures three things: fat mass (including regional distribution and visceral fat), lean mass (muscle, water, connective tissue), and bone mineral density. It gives you the most complete picture of your body composition available.

Is a DEXA scan safe?

Yes. A DEXA scan uses extremely low radiation, roughly 0.001 mSv per scan, which is less than a cross-country flight or a day of natural background radiation. It's one of the safest imaging procedures available.

How is DEXA different from a smart scale or body fat measurement?

DEXA is considered the gold standard because it has a margin of error of about 1 to 2 percent, provides a full regional breakdown of where fat and muscle are distributed, and measures bone density. Smart scales and calipers can swing by 3 to 8 percent depending on hydration, time of day, and technique.