What Is a DEXA Scan? A DEXA scan (Dual-Energy X-ray Absorptiometry) is a safe, painless test that measures bone density. It helps your doctor understand your risk for fractures and osteoporosis, a condition where bones become thin and more fragile.
Who Should Get a DEXA Scan?
- You may need a DEXA scan if you are age 65 or older (recommended for all women, and some men based on risk)
- You may need a DEXA scan earlier if you:
- Have had a nontraumatic or low trauma bone fracture in self or parents
- Excessive alcohol consumption (3 or more drinks in a day)
- Smoke cigarettes
- Take medications that affect bone health (like steroids)
- Have certain health conditions such as rheumatoid arthritis or low body weight
- Have certain health conditions related to osteoporosis. This can include early menopause, chronic liver disease, chronic malnutrition or malabsorption, diabetes, hyperparathyroidism, and untreated hyperthyroidism
Talk to your healthcare provider about your individual risk factors.
What to Expect During the Test
- It’s quick and painless: The scan usually takes 15–20 minutes.
- You’ll lie flat on a table: A scanner will pass over your lower spine and hip while you stay still.
- You stay fully clothed: Just avoid wearing clothing with zippers, buttons, buckles, or metal.
- Minimal radiation exposure: The amount of radiation is very low
How to Prepare
- No special prep needed: You can eat and drink as usual.
- Ask your doctor if you should skip calcium supplements: You may need to avoid taking calcium 24 hours before your scan.
- Tell the technician if: You recently had a barium test or MRI/CT scan with contrast.
After the Scan
- Results are reviewed by your doctor: They’ll look at your "T-score" and your “Z-score” to determine your bone health. Your doctor will discuss your results with you to explain what they mean and any necessary next steps.
- Next steps may include: Lifestyle changes, supplements, or medication if your bones are thinning.
Why It Matters Bone loss can happen without symptoms. A DEXA scan helps catch problems early—before a fracture occurs. Preventing falls and fractures is an important part of staying independent and healthy.
Questions? Ask your doctor or pharmacist about your bone health and whether a DEXA scan is right for you.
Learn more at: www.nof.org (National Osteoporosis Foundation)
This content was created with the assistance of AI. Any AI-generated content was reviewed by a Nurse Practitioner.