A DEXA (DXA) scan is the gold standard for measuring bone density — it's the test that determines whether you have osteoporosis or osteopenia. Getting one in Canada depends heavily on which province you're in, your age, and your risk factors. Here's a clear-eyed guide to the whole process.
DEXA stands for Dual-Energy X-ray Absorptiometry. The machine sends two low-dose X-ray beams through your bones — usually the hip and lumbar spine — and measures how much is absorbed. Dense bones absorb more; less-dense bones let more through. The test takes about 10-20 minutes, you lie on a table fully clothed, and the radiation exposure is minimal (less than a chest X-ray).
What DEXA measures specifically: bone mineral density (BMD) at the hip and spine, expressed as a T-score and Z-score. These scores tell you where your bone density sits relative to a young adult reference population (T-score) and relative to people your age and sex (Z-score).
What it doesn't tell you: the quality of the bone structure (trabecular microarchitecture), which is increasingly recognized as important for fracture risk but requires different imaging. DEXA is about density, not structure. A normal DEXA doesn't mean zero fracture risk — it means density is in a normal range.
The T-score compares your bone density to the average peak bone density of a healthy young adult. A T-score of -1.0 means your density is one standard deviation below that peak. -2.5 is two and a half standard deviations below — that's the WHO diagnostic threshold for osteoporosis.
The Z-score is different — it compares you to people of your same age and sex. A low Z-score in someone young is more clinically significant than in an older person, because it suggests bone loss beyond what's expected for your age. Your doctor will interpret which score matters more in your situation.
This is where things get frustrating for Canadians. Coverage for DEXA scans varies significantly by province, and the criteria for who qualifies are not always clearly publicized.
| Province | Coverage Status | Notes |
|---|---|---|
| Ontario (OHIP) | ✅ Covered | Requires physician referral, must meet criteria (age 65+, or risk factors); covered at approved facilities |
| British Columbia (MSP) | ✅ Covered (recently) | MSP began funding DXA after a long period of non-coverage; check with your doctor for current criteria |
| Alberta (AHCIP) | ⚠️ Limited | Alberta Health does not routinely cover DXA; coverage is limited to specific circumstances — verify with your physician |
| Quebec (RAMQ) | ✅ Covered | Covered with referral and clinical indication |
| Manitoba, Saskatchewan | ✅ Generally covered | With physician referral and clinical indication; criteria apply |
| Atlantic provinces | ✅ Generally covered | With referral; criteria vary by province |
Even in provinces that cover DEXA, not everyone gets a referral automatically. General criteria that typically qualify someone for a covered scan (these vary by province and change over time):
Osteoporosis Canada maintains clinical guidelines that most Canadian physicians follow when making referral decisions. Ask your doctor specifically about the Osteoporosis Canada CAROC or FRAX-based assessment — these tools can help determine whether a scan is clinically warranted in your case.
If you don't qualify for a covered scan or want one sooner, private DEXA is available in most major Canadian cities. Pricing as of 2026:
Search "[your city] private DEXA scan" or "[your city] bone density test" — most radiology clinics that serve sports medicine and wellness clients offer this. Some physiotherapy clinics also have referral arrangements.
Osteoporosis Canada's general guidance on repeat testing:
Serial scans are more useful than any single measurement. A T-score in isolation is a snapshot; the rate of change over years tells you whether your bones are stable, improving (with treatment), or continuing to lose density.