Test Catalog
Vitamin D, 1,25-Dihydroxy
  • CPT Code: 82652
  • LOINC: 1649-3
  • Specimen Type: red or gel clot
  • Frequency: Setup: Mon-Fri; analytic time 2 days
  • Instructions: 1.5mL serum from red or gel clot. Refrigerate. 4 hour fast preferred. Min. 0.7mL.
  • Text: Useful as second order test in assessment of VIt D status, especially in patient with renal disease. Differential diagnosis of hypercalcemia. Order 25OHD on non-renal patients.
  • Methodology: Extraction/Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)