QuestAssureD™ 25‑Hydroxyvitamin D (D2, D3), LC/MS/MS
Also known as: Vitamin D3, 25-hydroxy, D2 Vitamin, D3 Vitamin, 25-Hydroxycholecalciferol (25OHD3)
Use
This assay provides measurement of total 25‑hydroxyvitamin D concentrations including separate quantitation of the D2 and D3 vitamers. It is specifically recommended for patients aged 3 years and older on vitamin D2 supplementation or for situations where differentiation between vitamin D2 and vitamin D3 is clinically relevant, such as assessing contributions of supplementation or nutritional sources.
Special Instructions
Not provided.
Limitations
Although the assay differentiates 25‑hydroxyvitamin D2 and D3, reference and interpretative ranges have not been established for the individual D2 and D3 components of total 25‑hydroxyvitamin D. Interpretation should rely on total 25(OH)D reference ranges.
Methodology
Mass Spectrometry
Biomarkers
Result Turnaround Time
2-7 days
Related Documents
For more information, please review the documents below
Specimen
Serum
Volume
Not provided
Minimum Volume
Not provided
Other tests from different labs that may be relevant