mine was a little different. I laid on my back and there was an overhead machine that scanned over me. My dominate side is right so they scanned left upper arm and lower leg. Check non-dominate side as it would not be as built-up/used as dominate side. Much too my surprise I was a precandidate for osteoporosis. I have walked for some time so thought I would be okay. Dr. up'd the amount of calcium I take. Won't repeat test until next year as insurance won't pay for annual ones.
Easy as pie to have it done tho. Good to have a baseline is my understanding.