Bone Mineral Density (BMD)

Bone Mineral Density is also known as:

  • BMD TEST
  • BONE DENSITY TEST
  • BONE DENSITOMETRY
  • DEXA SCAN
  • DXA
  • DUAL-ENERGY X-RAY ABSORPTIOMETRY

What is a Bone Mineral Density (BMD) Test?

A Bone Mineral Density (BMD) test uses X-rays to measure how much calcium and other bone minerals are packed into a bone segment. The bones that are most commonly tested are in the spine, hip and forearm. The higher the bone mineral content, the denser the bones are. Denser bones are stronger and are less likely to break. The prevalence of osteoporosis (a disease that causes bones to become more fragile and brittle) in Indian women aged 30-60 years is as high as 29%. Although osteoporosis is more common in older women, men can also develop the condition.

A BMD test at Shree Krishna Diagnostics helps identify the decrease in bone density in order to determine the risk of fracture, and/or monitor osteoporosis.

BMD test results are estimated on the basis of:

T Score

  • The patient's Bone Mineral Density as compared to the peak bone mass in a normal young adult
  • A score of 0 means BMD = normal of a healthy young adult
  • The diagnosis of osteoporosis or low bone mass is based on the T-score
Z-SCORE

  • The patient's Bone Mineral Density as compared to the peak bone mass in an age-sex matched adults
  • Z-SCORE is useful for determining whether an underlying disease or condition is causing bone loss

How to prepare for a BMD Test?

  • Avoid calcium supplements and multivitamins 24-48 hours prior to the test
  • Avoid wearing clothes with metal buttons or buckles
  • You may also be required to remove any jewellery that could interfere with the test

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