Biochemistry · Nutritional Deficiency
Vitamin D Test
Measures 25-hydroxyvitamin D in blood. Vitamin D deficiency is extremely common in India and affects bones, immunity, muscles, and mood.
The "Sunshine Vitamin" — Why Indians Are Deficient
The Vitamin D (25-OH) test measures your body's stored form of Vitamin D in blood. Unlike most vitamins, Vitamin D is primarily produced in your skin on exposure to UVB sunlight — which is why it is nicknamed the "sunshine vitamin." It is essential for calcium and phosphorus absorption, bone density, immune regulation, and muscle function.
Paradoxically, despite living in a sun-rich country, over 70% of Indians have insufficient Vitamin D. Key reasons include sunscreen use, clothing coverage, air-conditioned indoor jobs, darker skin requiring more sun exposure to produce D, and very few dietary sources of Vitamin D in a predominantly vegetarian diet.
Reference Ranges
| Level (ng/mL) | Status | Clinical Meaning |
|---|---|---|
| < 10 ng/mL | Severe Deficiency | Rickets risk in children; osteomalacia in adults |
| 10–20 ng/mL | Deficiency | Bone loss, muscle weakness, fatigue |
| 21–29 ng/mL | Insufficiency | Suboptimal; supplementation advised |
| 30–100 ng/mL | Sufficient / Optimal | Target range for most adults |
| > 100 ng/mL | Toxicity | Hypercalcaemia risk — avoid excessive supplements |
Symptoms of Vitamin D Deficiency
Preparation
No fasting required. If you take Vitamin D supplements, inform your doctor — ideally stop high-dose supplements 2–3 days before testing for most accurate baseline levels. The test can be done at any time of day.
Test Price at Velys Hospital
₹150
Inclusive of collection · Same-day report
Book Vitamin D Test at Velys Hospital
No fasting needed · Walk-in available · Same-day results · Ahmedabad