The phosphorus blood test is ordered to measure the amount of phosphorus, one of the key electrolytes in the body.

NORMAL RESULTS

Normal values for phosphorus generally range from 2.4 to 4.1 milligrams per deciliter (mg/dL).

HIGHER THAN NORMAL RESULTS

If the phosphorus levels are higher than normal (hyperphosphatemia) it may indicate:

Hypoparathyroidism (low parathyroid hormones)
Liver disease
Renal failure
Excess Vitamin D
Diabetic ketoacidosis
A diet containing too much phosphate

LOWER THAN NORMAL RESULTS

If the phosphorus levels are lower than normal (hypophosphatemia) it may indicate:

Hypercalcemia
Hyperparathyroidism
Alcoholism
Malnutrition
Diet deficiency of phosporus
Osteomalacia