Dexa scans are the most commonly used test to measure bone density. Your results from this test can be a great help for diagnosing your initial bone loss and for monitoring the effectiveness of your Osteopenia treatment plan. On going test results can help you decide if you need to make adjustments in your plan.
( If you have already had this test and want to understand what the results better, go to: dexa scan meaning
Here are some frequently asked questions about this test :
1. What does dexa stand for?
Dexa stands for ‘Dual Energy X-ray Absorptiometry’. It is the most commonly used test for measuring bone mineral density. It is one of the most accurate ways to diagnosis Osteopenia or Osteoporosis.
2. Who should have this test?
The National Osteoporosis Foundation’s guidelines state that women over 65, younger post menopausal women who have any of the osteoporosis risk factors , as well as those with specific fractures. However, men are also at risk for Osteoporosis as they age - especially if they have some of the Causes of Osteopenia or Osteoporosis
3. Is there any one who should not have this test?
You should not have the test if you are pregnant or think you are pregnant. Also if you have had another x-ray with contrast media in the last 7 days (some examples: barium enema, upper GI , some CAT scans] or if you have had a nuclear scan (including bone scan and thyroid study) in the last 7 days, you should not have this test.
4. Why is this test used? Why not use a regular X-ray or a CAT scan?
Dexa Scans are used to measure bone mineral density because they:
5. How should I prepare for the test?
This is a non-invasive test and requires very little preparation. If you are taking calcium supplements, stop taking them for 48 hours before your test. If you are taking any medications for Osteopenia or Osteoporosis, do not take them the day of your test. You can eat and drink normally on the day of the test.
Do wear loose clothing that has no metal zippers, metal buttons etc. (or you will need to disrobe) If you wear any kind of metal jewelry, you will need to remove it before the test.
Be sure to tell the technician if you have had any hip or back injury. And since most technicians will measure the hip of your non-dominant hand, it is worth mentioning if you are left handed.
6. Will my insurance pay for this test?
Currently dexa scans cost about $250. Some insurance companies will pay for the test - especially if you have any of the risk factors. Do check with your insurance company.
Medicare. Medicare will cover an initial screening and a repeat screening once every 24 months. If your dexa scan shows osteoporosis and you begin taking a prescription medication to treat this condition, Medicare will cover a repeat scan after 1 year to see if the treatment is working. Repeat screenings are covered every 2 years.
Medicare will also cover the cost in specific situations:
a. patients who have thin bones or certain fractures.
b. patients taking more than 7.5mg of prednisone per day
c. patients with an over-active thyroid.
d. patients taking an FDA approved drug for the treatment of osteoporosis to see how well the drug is working.
6. When will I get my results?
You can ask the technician when the results are likely to be mailed to your health care provider. Most technicians will tell you this.
SPECIAL NOTE: Dexa scans are not the only kind of bone density test. If you want information about the other tests available go to: Bone density tests
Click here to read more about dexa scans and what the results mean: T scores, Z scores and more.
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