The test is often accompanied by other tests including calcium, parathyroid hormone, or vitamin D. The tests further help to diagnose or monitor treatments of various health conditions caused because of calcium and phosphorus imbalance.
A phosphorus test or P+ test is usually done on blood samples. In some cases, healthcare professionals screen urine samples to check phosphorus elimination by the kidneys.
Please note that enemas, consumption of vitamin D supplements in excess quantity, and intravenous glucose administration may affect phosphorus levels in the blood and urine.
The normal range of a phosphorus test may vary based on the laboratories. On average, a normal phosphorus range for adults is between 2.3 to 4.7 mg/dL.
Abnormal levels of phosphorus can cause a number of health conditions. High levels of phosphorus can also cause organ damage because of the accumulation of calcium phosphate in the tissues. In some cases, high levels of phosphorus can also cause osteoporosis or cardiovascular disease.
Just like any other blood test, after a phosphorus test, you may experience slight dizziness, bleeding, or pain from the puncture site. Talk to your doctor if you have any other queries.
Why is a Phosphorus Test done?
Phosphorus is absorbed in the intestines and is filtered and eliminated via your kidneys. Abnormal levels of phosphorus in your blood indicate that you may have kidney disease, liver disease, weakness, fatigue, or bone problems.
Your doctor may ask you to do a phosphorus test in the following conditions:
- If you have issues with diabetes that includes hormone imbalances
- If you have bone issues
- In the case of muscle cramping
- If instances of fatigue
- If you have muscle weakness
Your doctor may ask you to do additional blood tests if you have abnormal phosphorus levels. Based on the reports of the additional tests your doctor may suggest treatments.