Imperial Collage Healthcare

Vitamin D 1,25-dihydroxy

Test Background
1,25-(OH)2 vitamin D3 is the active form of vitamin D and stimulates intestinal calcium/phosphate absorption, increased bone resorption.

Clinical Indications
1,25-(OH)2 vitamin D3 is occasionally used for monitoring replacement therapy in parathyroidectomised patients.
Not for monitoring vitamin D status, please request 25-OH vitamin D.

Reference Range
See report

Sample Required
Serum (red top)

Sample Volume
3.5 mL on ice rush to laboratory

Turnaround Time
Up to 6 weeks

Not currently performed in house; this is a referred test.

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