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25-Hydroxyvitamin D

Alternative Names:Vitamin D
Vitamin D3
Vitamin D -25(OH)
Laboratory:Clinical Biochemistry
Test Code:25OHVITD
Specimen Types:Blood
Container Types:
Lithium Heparin (with Gel)
SST
Transport Instructions between Sites and/or Laboratories:Room Temperature
Assay Frequency:Daily
Additional Notes:

Reference Intervals;

Vitamin D adequacy: > 50 nmol/L at the end of winter (level may need to be 10–20 nmol/L higher at the end of summer, to allow for seasonal decrease).

• Mild vitamin D deficiency: 30–49 nmol/L

• Moderate vitamin deficiency: 12.5–29 nmol/L

• Severe vitamin D deficiency: < 12.5 nmol/L

 

(R.I. Source : Med J Aust 2012; 196 (11): 686-687)

Note: > 250 nmol/L can be associated with toxicity and hypercalcemia.

Test performed on Abbott Alinity