Pathology Handbook

New search

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