While a Phosphorus Blood Test primarily measures phosphorus levels in the blood, it can provide indirect information about bone health. Abnormal phosphorus levels, especially when accompanied by abnormalities in calcium and vitamin D levels, may raise suspicion of bone disorders like osteoporosis. However, a definitive diagnosis of osteoporosis typically requires additional tests, such as bone density scans. Your doctor will consider multiple factors, including test results, medical history, and risk factors, when assessing your bone health and the need for further evaluation.