Vitamin D, 25-Hydroxy CPT: 82306
Synonyms
25-Hydroxycalciferol
25-OH-D
Cholecalciferol Metabolite
Vitamin D3 Metabolite
Test Includes
Expected Turnaround Time
Within 1 day
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Specimen Requirements
Specimen
Serum
Volume
0.5 mL
Minimum Volume
0.3 mL (Note: This volume does not allow for repeat testing.)
Container
Red-top tube or gel-barrier tube.
Collection
If tube other than a gel-barrier tube is used, transfer separated serum to a plastic transport tube.
Storage Instructions
Refrigerate
Stability Requirements
Patient Information
To determine if you have a vitamin D deficiency; if you are receiving vitamin D supplementation, to determine if it is adequate.
When you have an abnormal calcium, phosphorus, and/or parathyroid hormone level; when you have evidence of bone disease or bone weakness; when you are at high risk of deficiency or a healthcare practitioner suspects that you might have a vitamin D deficiency; prior to starting drug treatment for osteoporosis; periodically to monitor treatment of vitamin D deficiency.
A blood sample drawn from a vein in your arm.