25-hydroxy vitamin D test
The 25-hydroxy vitamin D test is the most accurate way to measure how much vitamin D is in your body.
Vitamin D helps control calcium and phosphate levels in the body.
This test is done to determine if you have too much or too little vitamin D in your blood.
The normal range of vitamin D is measured as nanograms per milliliter (ng/mL). Many experts recommend a level between 20 and 40 ng/mL. Others recommend a level between 30 and 50 ng/mL.
The examples above are common measurements for results of these tests. Normal value ranges may vary slightly among different laboratories. Some laboratories use different measurements or test different samples. Talk to your doctor about the meaning of your specific test results, and whether you may need vitamin D supplements.
- Sample of blood serum
- We perform the test every Wednesday & Friday