MyMedLab

There is no special preparation required before testing.

Vitamin D test results will be available 3-5 DAYS after collection.

This test is a measure of the levels of Vitamin D, 25 Hydroxy, or Calcidiol, in the blood stream.

Vitamin D tests are used to determine if bone weakness, bone malformation, or abnormal metabolism of calcium (reflected by abnormal calcium, phosphorus or PTH tests) is occurring as a result of a deficiency or excess of vitamin D.

Vitamin D tests also may be used to help diagnose or monitor problems with parathyroid gland functioning since parathyroid hormone is essential for vitamin D activation. When vitamin D, calcium, phosphorus, or magnesium supplementation is necessary, vitamin D levels are sometimes measured to monitor treatment effectiveness.

CLICK HERE for More Detailed Vitamin D, 25 Hydroxy Test Information