The purpose of this study is to validate a human saliva sample analyzer technique designed to screen for low bone density and osteoporosis. The analyzer technique is meant to be a simple, noninvasive, easy-to-use, cost-effective, and routine means of diagnosing bone turnover using a point-of-care device that monitors salivary markers of bone turnover in a screening patient population that is at risk for low bone density or osteoporosis.