Vitamin D — often called the "sunshine vitamin" — helps your body absorb calcium, keeps bones and muscles strong, and supports your immune system. Despite plenty of sunshine in India, vitamin D deficiency is remarkably common, partly due to indoor lifestyles, sunscreen use, pollution and skin pigmentation. A simple blood test can tell you where you stand.
Signs & symptoms of deficiency
- Fatigue and low energy;
- Bone pain, muscle weakness or cramps;
- Frequent infections or slow recovery;
- Low mood;
- Hair thinning and slow wound healing.
The test: 25-Hydroxy Vitamin D
Vitamin D status is measured by the 25-OH Vitamin D (Total) blood test, which reflects vitamin D from both sun exposure and diet/supplements. It is the most reliable indicator of your overall vitamin D levels.
Reference ranges
| Status | 25-OH Vitamin D (ng/mL) |
|---|---|
| Deficient | Less than 20 |
| Insufficient | 20 – 29 |
| Sufficient | 30 – 100 |
Who should get tested?
- People with bone pain, muscle weakness or frequent fractures;
- Older adults and post-menopausal women;
- People with limited sun exposure or darker skin;
- Those with digestive conditions affecting absorption.
How to prepare
No fasting is required. Let the lab know about any vitamin D or biotin supplements you take, as high-dose biotin can interfere with some assays.
Check your Vitamin D at YCLIN
Fast, accurate 25-OH Vitamin D testing with expert reporting.
Book a Test