Your First Step: The Doctor’s Visit
Your journey to a bone density check, formally known as a DEXA (Dual-Energy X-ray Absorptiometry) scan, begins with a conversation with your primary care physician. This is not a test you can simply request on your own. Your doctor will evaluate your personal risk factors to determine if a DEXA scan is appropriate for you.
Who Should Consider a Bone Density Check?
While the test is often associated with postmenopausal women, several factors can make a person a candidate for screening.
Risk Factors for Bone Density Loss
- Age and Gender: Women over 65 and men over 70 are typically recommended for screening.
- Fracture History: A previous fracture from a minor fall can be a significant indicator.
- Low Body Weight: Individuals with a low body mass index (BMI) are at higher risk.
- Family History: A parent or sibling with osteoporosis or a history of fractures.
- Medications: Long-term use of certain drugs, such as corticosteroids, can weaken bones.
- Lifestyle Factors: Smoking, excessive alcohol consumption, and a sedentary lifestyle contribute to bone loss.
- Medical Conditions: Rheumatoid arthritis, kidney disease, and celiac disease can affect bone health.
The Referral Process
Once your doctor determines you are a good candidate, they will provide a referral. This is a standard procedure that authorizes the specialized test. Your doctor's office will often assist you in scheduling the appointment or provide you with a list of reputable testing centers.
Understanding the DEXA Scan
The DEXA scan is the gold standard for measuring bone mineral density. It is a quick, painless, and non-invasive procedure.
What to Expect During the Exam
- Preparation: Wear comfortable, loose-fitting clothing without metal zippers or buttons.
- The Scan: You will lie on a padded table while a low-dose X-ray arm passes over your lower spine and hip.
- Duration: The entire test typically takes only 10 to 20 minutes.
- No Pain: The procedure is completely painless, and you can breathe normally throughout.
What Do the Results Mean?
The DEXA scan provides a T-score, which compares your bone density to that of a healthy young adult, and a Z-score, which compares your results to others in your age group. These scores are crucial for diagnosing osteoporosis or osteopenia.
Comparison of Bone Density Testing Methods
While DEXA is the most common, other methods exist, though they are less comprehensive.
| Test Method | Pros | Cons | Use Case |
|---|---|---|---|
| DEXA Scan | Highly accurate, measures hip and spine, gold standard. | Requires a medical referral, limited access in some areas. | Diagnosis of osteoporosis, monitoring treatment. |
| Peripheral DEXA (pDEXA) | Portable, lower cost, quicker than a full DEXA. | Measures density at the heel, wrist, or finger only; not for diagnosis. | Screening tool, not definitive diagnosis. |
| Quantitative Ultrasound (QUS) | No radiation, portable, low cost. | Measures density at the heel; less accurate than DEXA. | Screening tool, not definitive diagnosis. |
Preparing for Your Appointment
Following a few simple steps can ensure an accurate reading.
- Inform Your Provider: Tell the testing center if you are pregnant or have recently had a barium study or a contrast dye injection.
- Calcium Supplements: Avoid taking calcium supplements for 24 hours before your test.
- Medications: Continue all other medications as prescribed unless your doctor instructs otherwise.
What if Your Insurance Doesn’t Cover It?
Some health insurance plans, including Medicare, cover bone density checks for specific at-risk groups. If you do not meet the criteria for coverage, you can still get a test. Some hospitals offer reduced rates, and you can often find local clinics offering special pricing. Always call your insurance provider first to understand your specific benefits and coverage details.
After the Test: Your Path Forward
After your scan, your doctor will discuss your T-score and recommend a course of action. This may include lifestyle changes, nutritional adjustments, or medication, depending on your results.
Strategies for Strong Bones
- Diet: Ensure an adequate intake of calcium and vitamin D.
- Exercise: Engage in weight-bearing exercises like walking, jogging, and strength training.
- Healthy Habits: Avoid smoking and limit alcohol consumption.
Your doctor may also refer you to a specialist, such as an endocrinologist, if your results indicate a more complex issue. For more comprehensive information on bone health and osteoporosis, you can visit the National Osteoporosis Foundation website.
Conclusion
Getting a bone density check is a proactive step in managing your health, especially as you get older. By starting with a conversation with your doctor, following the referral process, and preparing for the DEXA scan, you can gain valuable insight into your bone health. This empowers you to make informed decisions and take preventative measures to protect against fractures and maintain your quality of life.