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Vitamin D Calculator
Serum 25(OH)D Level & Bone Health Status Evaluation
Endocrinology Guidelines: Serum 25-hydroxyvitamin D [25(OH)D] levels below $20\text{ ng/mL}$ indicate deficiency, $20\text{--}29\text{ ng/mL}$ indicate insufficiency, and $\ge 30\text{ ng/mL}$ indicate sufficiency. Enter your serum test result below.
Laboratory Test Input Values
Assessment Results
⚠️ Not medical advice. For endocrinology, clinical pathology, and medical reference only. Vitamin D deficiency diagnosis, therapeutic supplementation protocols, and high-dose regimens must be supervised strictly by an attending physician or endocrinologist.