The urinary inorganic phosphate test measures phosphate levels in the urine to assess kidney function, bone health, and phosphate metabolism.

• Purpose: Evaluate kidney function, bone diseases, and metabolic disorders (e.g., hypophosphatemia or hyperphosphatemia).
• Sample Type: 24-hour urine collection.
• Normal Range: 0.3 to 1.2 g/day (varies by lab).
• Interpretation:
• Low Phosphate: Can indicate malnutrition, vitamin D deficiency, or kidney issues.
• High Phosphate: May be caused by kidney disease, hyperparathyroidism, or excessive dietary intake.

Hyperphosphatemia, Hypophosphatemia, Renal disease, Diabetic ketoacidosis, Liver disease.

Normal Range Adults -2.5 to 4.5 mg/dL Children -4.0 to 7.0 mg/dL.

The phosphorus test normal range differs for adults and children. You will also find slight variations among different laboratories. If the value is significantly higher than the normal range, it can be due to a variety of health conditions. Excessive consumption of food rich in phosphorus is also one reason for the high value of phosphorus. A doctor can diagnose different ailments based on the phosphorus test result and other test reports. Common health conditions associated with values above the normal range are: Hypoparathyroidism Kidney failure Liver disease Diabetic ketoacidosis Excess vitamin D in the diet Use of laxatives.

The test requires a blood sample collected from a vein in your hand or arm.