What Is the Role of Phosphorus in a Kidney Function Test (KFT Test)?

Phosphorus levels in a KFT assess the kidneys' ability to excrete excess phosphorus. Elevated levels (hyperphosphatemia) are often seen in advanced kidney disease, where reduced filtration allows phosphorus to build up in the blood. This imbalance can lead to bone and cardiovascular complications. Monitoring phosphorus levels is essential for individuals with chronic kidney disease (CKD), and dietary or medical interventions may be required to maintain balance.