Vitamin D 25-Hydroxy Test

Vitamin D 25-Hydroxy Test measures the amount of vitamin D in the body. Vitamin D helps regulate calcium and phosphate. Concentrations of Vitamin D provide a picture of renal health, also a deficiency of vitamin D can lead to bone weakness, bad teeth, increased risk of a heart attack, cancer, respiratory disorders and immune system dysfunction.

The body gets vitamin D from the skin (through exposure to the sun) and from certain foods and supplements.

Preparation: An 8 -12 hour fast is recommended before testing.