What osteoporosis screening actually tells you

An osteoporosis screening measures bone density using a painless X-ray called a DEXA scan (dual-energy X-ray absorptiometry). The scan compares your bone density to that of a healthy young adult and gives you a score that predicts your fracture risk. It does not diagnose osteoporosis by itself — the score does.

The results come back as a T-score. A T-score of −1.0 or higher means normal bone density. Between −1.0 and −2.5 means low bone density, sometimes called osteopenia. Below −2.5 means osteoporosis. Your doctor uses this number to decide whether you need treatment, monitoring, or lifestyle changes, and to estimate your 10-year fracture risk.

Screening does not hurt, takes about 10 to 30 minutes, and involves no needles or radiation exposure worth worrying about. You lie still on a table while the scanner passes over your hip, spine, and sometimes your forearm. The hardest part is usually scheduling the appointment.

Key Takeaways

  • Women age 65 and older and men age 70 and older should have at least one screening; younger people with risk factors may need one sooner.
  • A DEXA scan is the standard screening tool and produces a T-score that predicts fracture risk within 10 years.
  • Your primary care doctor can order a screening, or you can ask for a referral to a bone health specialist or radiology center.
  • Medicare covers one screening every two years for may be able to access beneficiaries; private insurance coverage varies by plan.
  • Screening results guide treatment decisions but do not change what you should do about diet, exercise, and fall prevention right now.

Who should get screened and when

The U.S. Preventive Services Task Force recommends screening for all women age 65 and older and all men age 70 and older, regardless of symptoms or risk factors. If you are younger but have risk factors, your doctor may recommend screening earlier.

Risk factors that prompt earlier screening include a personal history of fracture as an adult, a parent or sibling with hip fracture, current smoking, heavy alcohol use (more than three drinks daily), rheumatoid arthritis, use of corticosteroid medications for three months or longer, and low body weight. Women who have gone through menopause before age 45 are also at higher risk.

If your first screening shows normal bone density, you may not need another for 10 years. If it shows low bone density, your doctor will recommend follow-up screening every one to two years to track changes. The timing depends on your T-score and other risk factors.

How to get a screening ordered

Start with your primary care doctor. Tell them you want to discuss bone health screening, especially if you are in an age group that should be screened or if you have risk factors. Your doctor will review your medical history, current medications, and fracture risk before deciding whether to order a scan.

If your doctor agrees screening makes sense, they will write an order that you take to a radiology center or hospital imaging department. Some large primary care practices have DEXA scanners on-site, but most do not. Your doctor's office can usually tell you which imaging centers in your area accept your insurance.

You can also ask your doctor for a referral to an endocrinologist or bone health specialist if you want a second opinion or have complicated medical history. These specialists often order screening as part of a broader bone health evaluation.

What to expect during the scan

Arrive 10 to 15 minutes early to check in and fill out a brief health questionnaire. Wear comfortable, loose clothing without metal buttons, zippers, or underwire — metal interferes with the image. You can usually keep your clothes on.

The technician will position you on a padded table and may place a pillow under your knees for comfort. The scanner arm moves slowly over your lower spine and hip bones, then sometimes your forearm. You need to stay still but do not need to hold your breath. The whole process takes 10 to 30 minutes depending on which bones are scanned.

There is no pain, no injection, and no recovery time. You can drive, work, or do anything else when ready after. The radiation dose is extremely small — less than you receive from a cross-country airplane flight.

Understanding your results and next steps

Your results arrive within a few days, usually as a written report sent to your doctor and sometimes to you directly. The report includes your T-score, a comparison to your previous scans if you have had any, and sometimes a 10-year fracture risk estimate.

If your T-score is normal, your doctor will likely recommend you continue with bone-healthy habits: weight-bearing exercise (walking, dancing, light strength training), adequate calcium and vitamin D intake, no smoking, and limiting alcohol. You may not need another scan for 10 years.

If your T-score shows low bone density, your doctor will discuss whether medication makes sense based on your age, fracture risk, and other health conditions. Some people benefit from bone-strengthening drugs; others do better with lifestyle changes and monitoring. This is a conversation, not an automatic prescription.

If your T-score indicates osteoporosis, your doctor will almost certainly recommend medication along with lifestyle changes. They may also order blood tests to rule out other causes of bone loss, such as thyroid disease or vitamin D deficiency.

Insurance coverage and costs

Medicare covers one DEXA scan every two years for women age 65 and older and men age 70 and older, with no copay if your doctor orders it as a covered screening. Medicare also covers more frequent scans if you have a diagnosis of osteoporosis or are taking certain medications that affect bone density.

Private insurance coverage varies widely by plan. Most plans cover screening for people in the recommended age groups, but some require a copay or coinsurance. A few plans require prior authorization from your doctor before the scan. Call your insurance company or check your plan documents to find out what you will pay.

If you do not have insurance or your plan does not cover screening, a DEXA scan typically costs between $100 and $300 out of pocket, depending on the imaging center and your location. Some community health centers and bone health clinics offer reduced-cost or sliding-scale screening.

Screening limitations and what it does not tell you

A DEXA scan measures bone density but does not show bone quality or structure. Two people with the same T-score can have different fracture risks because bone quality varies. The scan also cannot predict which bones are most likely to break or whether you will actually fracture in the next 10 years — it gives a statistical estimate, not a certainty.

Screening does not replace fall prevention. Even people with normal bone density can fracture if they fall hard. Even people with low bone density may never break a bone. The scan is one piece of information, not the whole picture of your fracture risk.

If you have had recent spine surgery, severe arthritis of the spine, or metal implants in your hip or spine, the scan may not be accurate in those areas. Tell the technician about any hardware or recent surgery before the scan begins.

Frequently Asked Questions

Do I need a screening if I have no symptoms?

Yes, if you are in the recommended age group. Osteoporosis has no symptoms — many people do not know they have it until they break a bone. Screening before a fracture happens gives you time to prevent one.

Is a DEXA scan the only way to screen for osteoporosis?

DEXA is the standard and most accurate screening tool. Other machines like ultrasound or CT scans can measure bone density, but DEXA is what most doctors use and what insurance covers. Your doctor will use DEXA unless you have a specific reason you cannot have one.

What if my results show low bone density but my doctor does not recommend medication?

Low bone density does not automatically mean you need drugs. Your doctor weighs your age, fracture risk, other health conditions, and preferences. Many people with low bone density benefit most from exercise, calcium, vitamin D, and fall prevention. Medication is one option, not the only one.

How often should I be rescreened?

If your first scan is normal, you may not need another for 10 years. If you have low bone density, your doctor will usually recommend rescreening every one to two years to see if your bones are getting weaker or staying stable. If you start medication, rescreening after two years helps show whether the drug is working.

Can I get screened at an urgent care or walk-in clinic?

No. DEXA scans must be ordered by a doctor and performed at a radiology center, hospital, or imaging clinic with the equipment. Your primary care doctor can order one, or you can ask for a referral to a bone health specialist who can.