What Should I Expect During a Dexa Scan at a Local Clinic?

Medical technology continues to evolve, and among the most vital tools in preventive healthcare today is the Dexa scan. If you’re concerned about bone health, osteoporosis, or even tracking body fat, a Dexa scan can provide the accurate, detailed insights you need. But what exactly happens during the scan? What should you wear? How should you prepare? This guide offers a complete walk-through of what to expect during a Dexa scan at your local clinic.

Whether you’re visiting for the first time or returning for a follow-up, understanding the process will help ease anxiety and ensure you’re fully prepared.

What Is a Dexa Scan?

The Full Form and Basic Principle

DEXA stands for Dual-Energy X-ray Absorptiometry. It is a specialized imaging technique that uses low-dose X-rays to assess bone mineral density (BMD). The test is quick, painless, and widely used to diagnose osteoporosis and assess an individual’s risk for fractures.

The Dexa scan uses two different X-ray beams to create images of your bones. The amount of X-rays that pass through the bone is measured, and the difference between the beams helps in calculating bone density.

Primary Uses

Osteoporosis Diagnosis: Dexa scans are the gold standard for measuring bone loss.
Monitoring Bone Changes: Helps doctors determine how a patient is responding to osteoporosis treatments.
Body Composition Analysis: Many clinics offer full-body scans to track fat mass, lean muscle, and bone tissue distribution.

Why You Might Need a Dexa Scan

Medical Reasons

Certain populations are more susceptible to bone density loss and may be recommended for routine Dexa scans:

Postmenopausal women
Individuals with a history of fractures
Patients undergoing long-term corticosteroid treatment
People with thyroid disorders or chronic conditions affecting bone metabolism

Preventative Health Screening

Beyond bone density, many health-conscious individuals opt for Dexa scans to track their body composition. Athletes and fitness enthusiasts often use the scan to:

Monitor muscle-to-fat ratios
Optimize training regimens
Evaluate dietary effectiveness

Preparing for Your Dexa Scan Appointment

Booking the Appointment

Most local imaging clinics offer Dexa scanning services. Some require a referral from a general practitioner or specialist, while others accept direct appointments. Be sure to check:

If a referral is mandatory
The type of scan (bone density vs. body composition)
Available appointment times

What to Wear and Bring

You’ll want to dress comfortably and avoid clothing with metal zippers, snaps, or buttons. Metal can interfere with the accuracy of the scan.

Checklist:

Comfortable clothing (like a sports bra, leggings, or T-shirt)
Government-issued ID
Referral slip (if required)
Previous Dexa scan reports, if available

Pre-scan Instructions

Do not take calcium supplements 24 hours before the scan.
Inform the technician if you’ve had a barium X-ray or CT scan with contrast in the past two weeks.
Avoid wearing jewelry or accessories that contain metal.

What Happens During the Dexa Scan?

Step-by-Step Walkthrough

Check-In: On arrival, you’ll check in at the front desk and be guided to the imaging area.
Preparation: The technician may ask you to change into a gown if your clothing has metal parts.
Positioning: You’ll lie flat on your back on a padded scanning table.
Scanning: An X-ray arm will slowly move above your body while you remain still.
Duration: The entire process usually takes 10 to 20 minutes.

Areas Typically Scanned

Spine: Detects early signs of osteoporosis
Hips: A critical area prone to fractures
Forearms: Sometimes used when hips/spine can’t be scanned
Full-body (optional): For composition analysis

Comfort and Safety

Dexa scans are completely non-invasive. Unlike MRIs, there are no enclosed spaces, so claustrophobia is not an issue. The radiation dose is minimal—less than a day in natural sunlight.

After the Scan: Getting Your Results

Interpreting the Numbers

T-score: Compares your bone density to that of a healthy 30-year-old. A T-score:
- Above -1: Normal
- Between -1 and -2.5: Osteopenia
- Below -2.5: Osteoporosis
Z-score: Compares your bone density to others of the same age and gender. Useful for identifying secondary causes of bone loss.

Who Reviews the Results

A trained radiologist will analyze your scan and generate a detailed report. Your primary physician or referring specialist will review the results with you and suggest any required next steps.

Timeframe for Results

You can expect your results within 1 to 3 business days. Some clinics offer instant digital reports or online access through patient portals.

What the Results Mean for You

Normal Results

Indicates strong and healthy bones
Recommendations may include continued exercise and calcium intake

Low Bone Density

Indicates risk for future fractures
May require medications, lifestyle adjustments, or further testing

Tracking Over Time

Repeat scans every 1 to 2 years may be recommended, especially if you are on medication for osteoporosis or other bone health treatments.

Cost and Insurance Coverage

Average Costs in Local Clinics

Dexa scan pricing varies depending on the clinic and the type of scan:

Bone density scan: $70 to $150 AUD (if privately billed)
Full-body composition scan: $90 to $200 AUD

Insurance or Medicare Coverage

In Australia, Medicare may cover the cost if you meet specific criteria, such as:

History of fractures
Diagnosed conditions like osteoporosis
Long-term steroid use

Private insurance may also reimburse part or all of the cost. Always check with your provider before booking.

Choosing the Right Clinic for Your Dexa Scan

What to Look for

Clinic accreditation and certified radiologists
Modern Dexa equipment for precise results
Positive patient reviews

Questions to Ask Before Booking

Is a referral necessary?
Are full-body scans offered?
How long does the appointment take?
Will I receive a printed and digital report?

Tips to Get the Most Out of Your Dexa Scan

Bring past results for better comparison
Ask questions about your report for full clarity
Use results to set realistic health goals
Follow up regularly if you have a bone condition or are on medication

Conclusion

A Dexa scan is a valuable diagnostic and health-monitoring tool that provides insights into your bone strength and body composition. The process is quick, painless, and incredibly informative. Whether you’re taking a proactive approach to health or monitoring a condition, knowing what to expect can make your experience stress-free and empowering.

Remember, your bone health is an essential component of your overall well-being. A simple scan today could prevent a serious fracture tomorrow.

Frequently Asked Questions (FAQs)

Q1. Is a Dexa scan painful?

A: No. The scan is completely painless and requires no injections or incisions.

Q2. How often should I get a Dexa scan?

A: Depending on your condition, doctors may recommend one every 1–2 years, especially if you’re being treated for osteoporosis.

Q3. Can I eat or drink before the scan?

A: Yes, but avoid calcium supplements for at least 24 hours before the scan.

Q4. Does a Dexa scan expose me to a lot of radiation?

A: No. It uses very low radiation—much less than a standard chest X-ray.

Q5. What’s the difference between a Dexa scan and a CT scan?

A: A Dexa scan measures bone density and body composition with minimal radiation. A CT scan provides detailed images of internal structures but uses higher doses of radiation.