Test Code VD125 1,25-Dihydroxyvitamin D
Performing Laboratory
Northwell Health Laboratories
Methodology
Chemiluminescence (CLIA)
Reference Values
19.9 - 79.3 pg/mL
Test Classification and CPT Coding
82652
Day(s) and Time(s) Performed
Sunday - Saturday
Physician Office Specimen Requirements
Container/Tube: Gold topp tube
Specimen: 1.0 mL serum (0.5 mLmin)
Transport Temperature: Refrigerated
Computer Interface Code
PDM # 5901355
Useful For
As a second-order test in the assessment of vitamin D status, especially in patients with renal disease
Investigation of some patients with clinical evidence of vitamin D deficiency (eg, vitamin D-dependent rickets due to hereditary deficiency of renal 1-alpha hydroxylase or end-organ resistance to 1,25-dihydroxy vitamin D)
Differential diagnosis of hypercalcemia