Description
The Phosphorus Blood Test measures the level of phosphate (inorganic phosphorus) in your blood. Phosphorus is an essential mineral that works closely with calcium, vitamin D, and parathyroid hormone to maintain strong bones, healthy teeth, and proper nerve and muscle function.
Abnormal phosphorus levels can indicate issues with the kidneys, parathyroid glands, or bone metabolism, and may help detect underlying metabolic or endocrine disorders.
What This Test Measures
- Serum Phosphate (Phosphorus):
- Measures the amount of inorganic phosphorus circulating in the bloodstream, which is vital for bone formation, energy production, and cellular function.
- Clinical Significance:
- Abnormal phosphorus levels can indicate:
- Kidney dysfunction (high phosphorus)
- Hypoparathyroidism or hyperparathyroidism
- Vitamin D deficiency or toxicity
- Bone disorders, including osteoporosis
Why This Test May Be Ordered
Your healthcare provider may recommend phosphorus testing if you have:
- Abnormal calcium or PTH levels
- Kidney disease or dialysis
- Bone pain, weakness, or fractures
- Symptoms of metabolic or endocrine disorders
- Routine monitoring for patients on vitamin D, phosphate binders, or certain medications
Key Benefits of Phosphorus Testing
- Helps evaluate bone and mineral metabolism
- Detects kidney or parathyroid dysfunction early
- Guides nutritional and supplementation planning
- Can be used alongside calcium, PTH, and vitamin D tests for a full metabolic panel
Test Details
- Sample Type: Blood draw
- Fasting Required: No
