Vitamin D Total-25 Hydroxy

Vitamin D Total-25 Hydroxy


Test Overview – This test is performed to check for any signs of bone disorder such as weak bones that may occur as a result of a vitamin D deficiency. Vitamin D is an essential vitamin required by the body to absorb calcium and strengthen bones.


When is it recommended? – Early morning.


Diagnostic ailment – Bone health, rickets, osteoporosis.


Significance – Vitamin D is critical to help the body absorb calcium and maintain strong bones.


What does the test result mean? – In general, a result between 20 ng/mL and 50 ng/mL is considered sufficient for healthy people.

A level less than 12 ng/mL is indicative of vitamin D deficiency.

A level higher than 50  mg/mL indicates hypervitaminosis D i.e. extremely high levels of vitamin D.


Special Instructions – While some doctors may permit this test to be done at any time of the day, it is advisable to opt for a fasting blood test. Here, one should not eat or drink anything (except plain water) for at least 8 hours before the test.