1,25-Dihydroxyvitamin D
Measures the active form of vitamin D circulating in your blood.
Why This Biomarker Matters
Active vitamin D is crucial for calcium regulation, bone strength, and immune health. Abnormal levels can indicate kidney disease, metabolic disorders, or the need for supplementation adjustments.
Understanding Your Results
Normal Range
19 – 68 pg/mL
Overview
1,25-dihydroxyvitamin D is the most biologically active form of vitamin D, produced primarily by the kidneys. This test measures circulating levels of active vitamin D in your blood. Vitamin D is essential for calcium absorption, bone health, immune function, and mood regulation. Low levels may indicate kidney disease, vitamin D deficiency, or calcium disorders, while abnormally high levels can occur with excessive supplementation or certain granulomatous diseases. This test is particularly useful for evaluating bone health and metabolic disorders.
Technical Information (LOINC Codes)
Standardized laboratory codes for this biomarker
62290-2PrimaryAvailable Lab Tests
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