What are the normal phosphorus levels in adults?

The normal phosphorus levels in adults typically range from 2.5 to 4.5 mg/dL, with values of 3.5 to 5.0 mg/dL frequently cited in various clinical references. This range reflects the balance of phosphorus in the body, which is crucial for several physiological processes, including bone mineralization, energy metabolism, and cellular function.

Phosphorus levels that fall within this range are considered optimal for maintaining bone health and metabolic functions. Levels outside of this range can indicate disorders of metabolism, renal function, or dietary insufficiencies, leading to either hypophosphatemia (low phosphorus) or hyperphosphatemia (high phosphorus). The designation of 3.5 to 5.0 mg/dL as the normal range adequately captures the acceptable variation seen in healthy adults.

Understanding these reference ranges is important in the acute care setting, as imbalances can have significant implications for patient management and treatment decisions.