Bone density tests are most commonly done at hospitals, outpatient imaging centers, and specialty clinics that focus on orthopedics, rheumatology, or women’s health. Some primary care offices also have the equipment on-site. The type of facility matters because it determines which kind of scan you receive, and not all bone density tests are equally useful.
Hospitals and Imaging Centers
The gold standard for bone density testing is a central DXA scan (sometimes written DEXA), which measures bone mineral density at the hip and spine. These are the two sites most vulnerable to osteoporosis-related fractures, and measurements taken here are the most reliable for diagnosing bone loss and predicting fracture risk. Central DXA machines are large, table-sized devices, so they’re typically found in hospital radiology departments, freestanding imaging centers, and some larger medical group practices.
To find a location near you, the most straightforward route is asking your primary care provider for a referral. Most insurance plans and Medicare require a doctor’s order before they’ll cover the scan. Your provider’s office can often schedule it directly at an affiliated hospital or imaging center. If you’d rather search on your own, calling local radiology or imaging centers and asking whether they offer DXA scans will quickly narrow your options.
Peripheral Screenings at Pharmacies and Health Fairs
You may have seen bone density screenings offered at drugstores, health fairs, or mobile health vans. These use smaller, portable devices that measure bone density at peripheral sites like the wrist, heel, or finger. While convenient, these peripheral tests have significant limitations. Research shows poor correlation between peripheral measurements and central DXA results, and there’s no consensus on how to interpret peripheral scores. Hip DXA remains superior for predicting hip fracture risk, which is the fracture doctors worry about most.
A peripheral screening can flag potential concerns, but it can’t diagnose osteoporosis on its own. If a peripheral test suggests low bone density, you’ll still need a central DXA scan to confirm the results and guide treatment decisions. Think of peripheral screenings as a rough first look, not a substitute for the real thing.
Who Should Get Tested
The U.S. Preventive Services Task Force recommends bone density screening for all women 65 and older. Postmenopausal women younger than 65 should also be screened if they have one or more risk factors: low body weight, a parent who fractured a hip, cigarette smoking, or excess alcohol consumption. For women in that younger group, doctors typically use a risk assessment tool to estimate fracture probability before ordering the scan.
For men, there’s no universal screening recommendation. The evidence on whether routine screening prevents fractures in men hasn’t been established clearly enough for a blanket guideline. That said, men with specific risk factors (long-term steroid use, low testosterone, or a history of fragility fractures) are often tested at their doctor’s discretion.
These guidelines apply to adults 40 and older who haven’t already been diagnosed with osteoporosis and don’t have a known underlying condition causing bone loss, such as hyperparathyroidism or long-term corticosteroid therapy. People in those categories typically follow a separate monitoring schedule.
What the Test Costs
Medicare covers a bone density scan once every 24 months if you meet certain conditions: your doctor has determined you’re estrogen-deficient and at risk, your X-rays suggest possible bone loss, you’re taking or starting steroid-type medications, you’ve been diagnosed with primary hyperparathyroidism, or you’re being monitored to see if osteoporosis treatment is working. Most private insurance plans follow similar criteria, covering the test when a doctor orders it based on age or risk factors.
Without insurance, the cost varies widely. Prices range from as low as $55 at some facilities to over $1,000 at others, with statewide averages around $780 in states that track pricing. If you’re paying out of pocket, it’s worth calling a few imaging centers to compare. Freestanding imaging centers tend to charge less than hospital-based radiology departments for the same scan.
How to Prepare
Preparation is minimal. You can eat and drink normally before the test. The one important step: stop taking calcium supplements and other over-the-counter vitamins 24 hours before your appointment. Calcium in your system can affect the accuracy of the scan. Let your provider know about all the supplements you take so they can tell you which ones to pause.
Wear comfortable, loose-fitting clothes without metal zippers, buttons, or buckles. Some facilities will have you change into a gown, but many let you stay in your own clothing as long as it’s metal-free. You’ll also need to remove any jewelry in the scan area.
What Happens During the Scan
A central DXA scan is painless and quick, typically taking 10 to 20 minutes. You lie on a padded table while a scanning arm passes over your body, focusing on the hip and lower spine. The radiation exposure is extremely low, a fraction of what you’d receive from a standard chest X-ray. There are no injections, no enclosed spaces, and no recovery time. You walk out the same way you walked in.
Understanding Your Results
Your results arrive as a T-score, which compares your bone density to that of a healthy 30-year-old (the age when bones are at peak strength). The scale works like this:
- T-score of -1 or higher: Normal, healthy bone density.
- T-score between -1 and -2.5: Osteopenia, meaning bone density is below normal but not yet in the osteoporosis range.
- T-score of -2.5 or lower: Osteoporosis.
A diagnosis of osteopenia doesn’t automatically mean you need medication. Many people in this range manage with weight-bearing exercise, adequate calcium and vitamin D intake, and lifestyle changes. Your doctor will factor in your T-score alongside your age, fracture history, and other risk factors to decide whether treatment makes sense. If you do start medication, follow-up DXA scans (typically every two years) track whether treatment is maintaining or improving your bone density.