i-Screen Vitamin D Check
Type
Blood Testing
Biomarkers
1
Duration
30 min
Results
3 days
Simple vitamin D test to determine vitamin D deficiency.
A vitamin D test measures the level of 25-hydroxyvitamin D in your blood — the most accurate indicator of your body's vitamin D status. Vitamin D is essential for calcium absorption, bone health, immune function, and mood regulation. Despite its importance, vitamin D deficiency is one of the most common nutritional deficiencies worldwide, affecting an estimated 1 billion people. Low levels are linked to increased risk of osteoporosis, fractures, autoimmune diseases, depression, and certain cancers. People living at higher latitudes, those with darker skin, office workers with limited sun exposure, and the elderly are particularly at risk.
Key Details
Who Is This For?
Anyone living in regions with limited sunlight or who spends most time indoors. People experiencing bone pain, muscle weakness, or frequent illness. Those with darker skin (melanin reduces vitamin D synthesis). Older adults, as the skin's ability to produce vitamin D decreases with age. Anyone supplementing with vitamin D who wants to verify they're in the optimal range.
What's Included
Preparation Required
No fasting required. No special preparation needed. If you supplement with vitamin D, continue your normal dosage — the test is measuring your steady-state level, not an acute response.
Biomarkers Tested
1The best indicator of overall vitamin D status. Vitamin D is essential for calcium absorption, bone health, immune function, and mood regulation. Deficiency is extremely common, especially in northern latitudes, and linked to increased disease risk.
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- Category
- Diagnostic
- Sample Type
- Blood draw
- Duration
- 30 min
- Results
- 3 days
i-Screen
i-Screen is an Australian health service offering blood testing and analytics to help individuals understand and monitor their health through personalized online dashboards.
