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1,25-dihydroxy Vitamin D
minimum sample volume required ~ 5ml
Test Code: VI2
Tube type: SST
Special instructions
Must be discussed with the duty biochemist before requesting.
Age ........ Reference range
0 - <1 year ...... 77 - 471
1 - <3 years ..... 113 - 363
3 - <19 years .... 108 - 346
19+ years ........ 55 - 139
Sent away
to Norfolk & Norwich University Hospital
Contact Laboratory before requesting
Units
pmol/L
Turnaround Time
21
days
Department: Biochemistry
Clinical Application
Measurement of total vitamin D is the first-line test for investigation of suspected Vitamin D deficiency. Subsequent measurement of 1,25-dihydroxy Vitamin D may occasionally be useful e.g in investigation of pseudohypoparathyroidism and Vitamin D-dependent rickets. Prior discussion with lab essential
