25OH Vitamin D2/D3

Alternative Names
  • Vitamin D2
  • 25-hydroxy
  • 25-Hydroxyergocalciferol (25OHD2)
  • Vitamin D3
  • 25-hydroxy
  • D2 Vitamin
  • 25-Hydroxyvitamin D3
  • 25-OH-D3
  • 25-Hydroxycholecalciferol (25OHD3)
  • Vit D
  • LC/MS/MS
  • 25-OH-D2
  • D3 Vitamin
  • 25-Hydroxyvitamin D2
  • 25-Hydroxy Vitamin D (D2+D3 Fractionated)
  • Ergocalciferol

Test Code: 3002

CPT: 82306
Tests Included 25-OH Vitamin D, Total; Vitamin D, 25-OH, D3; Vitamin D, 25-OH, D2
Use Vitamin D levels are monitored for a number of uses ranging from dietary absorbtion, parathyroid function, bone weakness/malformation, metabolism of calcium, and to help with measuring Vitamin D treatment effectiveness
Clinical Utility Vitamin D is a fat soluble vitamin that is important in the regulation of calcium and phosphorous in the body. Vitamin D deficiency has been linked to rickets, osteoporosis and osteomalacia. It has also been associated with many other diseases such as cancer, cardiovascular disease, diabetes, and autoimmune disorders. Low levels result from dietary deficiency, poor absorption, or sterol metabolism blockage in the liver. High levels may lead to hypercalcemia.
Intended Patient Population 18+ and Older Adult Males & Females
Patient Preparation None
Sample Serum, Plasma, Whole Blood
Tube Red, Green, Tiger
Volume 100uL Whole Blood
Min Sample Volume 0.05 mLs
Reference Ranges Total Vit D - M & F ≥ 18 yrs old; 30-50 ng/mL
Analytical Measurement Range 1.5-100.00 ng/mL
Clinical Values > 80 ng/mL
Units ng/mL
Methodology LC/MS/MS
Test Turnaround Time 5 Days
Limitations Values of vitamin D vary with exposure to sunlight and dietary supplementation.
Shipping Requirements Room Temperature
Specimen Stability 8 Days Room Temperature
Reject Criteria Gross Hemolysis, Expired Sample, Insufficient Quantity
Laboratory Developed Test (LDT) Yes
CMS Guidance LCD L36692
LOINC Code 1989-3
References
  1. Holick MF (2007) Vitamin deficiency. N Engl J Med 357: 266 -281.
  2. Abrams SA (2011) Vitamin D supplementation during pregnancy. J Bone Mineral Res 26: 2338 – 2340.
  3. Holick MF et al (2011) Evaluation, treatment and prevention of vitamin D deficiency: An endocrine society clinical practice guideline. J Clin Endocrinol Metab 96: 1911 -1930.
  4. Watts NB, Bilezikian JP, Camacho PM, et al. American Association of Clinical Endocrinologists medical guidelines for clinical practice for the diagnosis and treatment of postmenopausal osteoporosis. Endocr Pract. 2010;16(Suppl 3):1-37.

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