Which of the following indicates an abnormal calcium phosphorus level?

An abnormal calcium phosphorus level in patients, especially those on hemodialysis, is significant for assessing bone and mineral health. When interpreting total calcium and phosphorus levels in blood work, it’s essential to consider the product of calcium and phosphorus (Ca x P) rather than just the individual values.

A normal calcium phosphorus product is typically described as being less than 55 mg/dL. A level that is less than 55 indicates a potentially abnormal situation where calcium and phosphorus may not be adequately balanced, possibly signaling concerns such as risk for bone disease or cardiovascular issues due to increased calcium and phosphorus levels.

The option indicating "less than 55" aligns with this context, as a level below this threshold may be seen as abnormal, highlighting the necessity for monitoring and management in patients with chronic kidney disease or those undergoing dialysis. Emphasizing the importance of maintaining the proper balance of calcium and phosphorus helps prevent complications such as vascular calcification and bone disease, conditions commonly observed in patients with kidney dysfunction.