How accurate is a DEXA scan for bone density?

How accurate is a DEXA scan for bone density?

Depending on the study you read, the variability between DXA scans can be as high as 5% to 6%. Although 5% to 6% might sound like a small amount, changes in bone growth are measured down to the hundredth and even thousandth decimal point.

Can a DEXA scan show arthritis?

When bone density is measured using DXA scanning, people with advanced (but not early) osteoarthritis in the spine (but not the hip) can appear to have a higher bone density than that measured by other methods because osteophytes (bone spurs) and disc narrowing may give the impression that the bone is thicker than it …

What happens if you take calcium before a DEXA scan?

Why can’t I take calcium supplements or multiple vitamins on the day of my DEXA scan prior to my test? If the calcium supplement is not completely dissolved, it will be interpreted by the DEXA instrument as extra bone and may produce an inaccurate reading.

What should I avoid before a DEXA scan?

You should not take calcium supplements for at least 24 hours before your exam. You should wear loose, comfortable clothing, avoiding garments that have zippers, belts or buttons made of metal. Objects such as keys or wallets that would be in the area being scanned should be removed.

At what age should a woman have a bone density test?

Bone density tests are recommended for all women age 65 and older, and for younger women at higher-than-normal risk for a fracture.

Can I take vitamin D before a bone density test?

Calcium and vitamin D intake before bone density test can reduce risk of osteoporosis.

Does walking help with osteopenia?

Like muscle, bone gets stronger when you use it. The best moves for bones are weight-bearing exercises that force your body to work against gravity. That includes walking, stair climbing, dancing, and lifting weights.

How do you stop osteopenia from progressing?

The best way to prevent osteopenia is to avoid or stop any of the behaviors that cause it. If you already smoke or drink a lot of alcohol or caffeine, stop — especially if you’re younger than age 35, when you can still build bone.

How fast does osteopenia progress?

Of patients with osteopenia, 23.7% progressed to osteoporosis; median progression time was >8.5 years. Progression time was >8.2 years in “low-risk” tertile (T score between −1.1 and −1.6 SD), >8.5 years in “middle-risk” (between −1.6 and −2), and 3.2 years in “high-risk” (from −2 to −2.4) (p<0.0001).