Phosphorus

About This Test
Phosphorus is a mineral that works with calcium and vitamin D to build strong bones and teeth, support energy production, and keep muscles and nerves functioning well. The blood level is tightly controlled by the kidneys and parathyroid hormone. Abnormal results can point to bone metabolism problems, vitamin D/PTH imbalance, or kidney issues. This test is commonly included in routine chemistry panels to detect problems early.

Patient Preparation
No fasting needed

Best Time to Test
Anytime

Tests Included
Phosphorus

Why is it done
Evaluation of bone pain, frequent fractures, or weak bones; assessment of chronic kidney disease and dialysis monitoring; work-up of vitamin D deficiency, hyper/hypoparathyroidism; checking nutrition status and refeeding risk; follow-up of prior abnormal calcium/phosphate results or related therapies.