Bone density testing is the primary way physicians diagnosis and treat osteoporosis (bone loss). Bone loss can start right after menopause; women can lose up to 20 percent of their bone mass in the first five to seven years after menopause. During a bone density test, a technologist calculates the density of your bones using an X-ray scan. This important, painless test can help determine if you are at risk for bone breakage. Bone density exams are painless and take approximately 20 minutes to complete. NSMC provides bone density testing in multiple locations.