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Preparation instructions: None

Description: Calcitriol is the active form of Vitamin D, made in the kidney. It is not the same as Vitamin D, 25-Hydroxy (typically used to measure vitamin D stores), which must be ordered separately.

Turnaround time: Expected turnaround is within 2-4 business days, although this may vary depending on other tests ordered for the same blood draw, and expected variation with testing.

Also known as:

  • 1,25(OH) Vitamin D
  • 1,25-Dihydroxy Vitamin D
  • 1,25-Dihydroxycholecalciferol
  • Vitamin D, 1,25-Dihydroxy