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Vitamin D, 1, 25 DiHydroxy

Source Blood
Mnemonic VD125
Specimen Requirements

1 x 3.5 mL gold top SST tube

1.5 mL serum

Minimum Whole Blood Volumes for Microcollections
Specimen Handling PSC & RRL:
Centrifuge, pour off, and transport serum to DSC.

Extra-regional:
Centrifuge, pour off, and freeze serum prior to transport to DSC.

DSC:
Freeze specimens upon receipt in lab; ensure frozen specimens do not thaw.
Additional Information
Testing Location Immunochemistry
Testing Frequency Once every two weeks
Alternate Name(s) Calcitriol, 1,25 DiHydroxy Vitamin D
Reference Interval 60 - 208 pmol/L