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Free vitamin D deficiency risk calculator based on common factors: UVB exposure pattern, skin tone, latitude/season, dietary intake, obesity, malabsorption, chronic kidney/liver disease, and relevant medications. This is a screening checklist, not a lab diagnosis.
Last updated: April 13, 2026
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Additional risk factors
Risk points: 4
Moderate deficiency risk factors present
Several recognized factors are present. A clinician may consider targeted 25(OH)D testing based on symptoms and history.
Contributing factors
Important
This is a screening-style risk checklist only. Confirm deficiency with serum 25-hydroxyvitamin D testing and clinician interpretation before treatment decisions.
Captures limited UVB periods and indoor-lifestyle patterns that reduce endogenous synthesis.
Includes common physiologic and epidemiologic factors associated with lower circulating 25(OH)D.
Flags higher-risk conditions where formal testing and clinician-guided repletion are often needed.
Risk points
4
Moderate deficiency risk factors present
Vitamin D status is best assessed by serum 25(OH)D, but pre-test risk can help prioritize who may benefit from screening discussions. This calculator weighs environmental exposure, dietary pattern, and medical factors to create an educational tier. It does not diagnose deficiency or dictate dose.
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Suggested hashtags: #VitaminD #Deficiency #Health #Nutrition #Calculator