1,25-Dihydroxyvitamin D

Test/Investigation

1,25-Dihydroxyvitamin D

Site(s) or Laboratory offering Test/Investigation

SAAS for Calcium and Bone Metabolism

Units

pmol/L

Also Known as/Frequency of Test

Calcitriol, 1,25-(OH)2 Vitamin D

Storage conditions and sample stability between collection and transport to Lab

If transporting immediately, send by first class post. If not, freeze the sample and send frozen.

Sample type

Serum (0.5 ml minimum)

Turnaround times (TAT) Urgent/Routine/GP or OPD

4 weeks

Reference intervals (adult unless stated)

Adult (> 18 yr) 55 – 139 pmol/L
Children:
0 – < 1 yr 77 – 471 pmol/L
1 – < 3 yr 113 – 363 pmol/L
3 – < 19 yr 108 – 246 pmol/L