This test measures the amount of vitamin D in the serum and is useful for Diagnosis of vitamin D deficiency, Differential diagnosis of causes of rickets and osteomalacia, Monitoring vitamin D replacement therapy, Diagnosis of hypervitaminosis D Vitamin D is a generic name for a group of fat-soluble, structurally similar sterols, which act as hormones. It is initial test for assessing Most accurate levels of vitamin D in the body. In Kidney disease patients, testing 1-25-dihydroxy vitamin D (DHVD) levels might be needed to properly assess the vitamin D status. 25 OH Vitamin D testing alone may not clearly indicate the deficiencies of VIt-D stores.
You don't need any special preparations.
<10 ng/mL (severe deficiency)
10-19 ng/mL (mild to moderate deficiency)
20-50 ng/mL (optimum levels)
51-80 ng/mL (increased risk of hypercalciuria)
>80 ng/mL (toxicity possible)
Type of sample to be collected