Description

A phosphorus blood test, also known as a phosphate blood test, measures the amount of phosphorus in your blood and is used to help diagnose and monitor a number of health conditions: 

Kidney disease: A high level of phosphorus in the blood is often a sign of kidney problems, as the kidneys have difficulty removing phosphorus from the body. 

Bone disorders: Phosphorus is a mineral that helps build strong bones and teeth. 

Diabetes: Uncontrolled diabetes can cause high levels of phosphorus in the blood. 

Endocrine disorders: High levels of phosphorus in the blood can be a sign of other endocrine disorders. 

Malnutrition: A phosphate test can help measure phosphate levels in people who are malnourished. 

Ketoacidosis: A condition that sometimes affects people with diabetes, where the body can't use blood glucose for energy. 

Digestive system conditions: A phosphate test can help diagnose conditions that interfere with the absorption of phosphate, calcium, and magnesium. 

Other conditions that can cause abnormal phosphorus levels include: 

  • Liver disease
  • Hypoparathyroidism
  • Too much vitamin D
  • Too much phosphate in your diet
  • Certain medicines, such as laxatives
  • Alcoholism
  • Hypercalcemia (too much calcium in the blood)

Fasting not required.