Vitamin D is not just a vitamin — it functions like a hormone in your body, influencing over 1,000 genes. Despite its importance, studies estimate that 1 in 3 people globally are deficient, with many more falling into the insufficient range.
☀️ Why Vitamin D Is Crucial
- Immune system regulation – supports defense against viruses and infections
- Bone health – aids in calcium absorption and prevents osteoporosis
- Hormonal balance – plays a role in testosterone, estrogen, and thyroid function
- Brain and mood support – linked to serotonin regulation and mental clarity
⚠️ Symptoms of Vitamin D Deficiency
- Frequent illness or longer recovery times
- Bone or joint pain, and muscle weakness
- Fatigue or low energy
- Low mood, anxiety, or seasonal depression
- Hair thinning or poor skin repair
Because symptoms are often vague or gradual, many people are unaware they’re deficient until a blood test confirms it.
👥 Who’s at Risk for Low Vitamin D?
- People with darker skin – melanin reduces vitamin D synthesis from sunlight
- Older adults – skin production of vitamin D declines with age
- Indoor workers or night-shift workers
- People who wear sunscreen or avoid the sun
- Individuals living in northern latitudes
🧪 How to Test Your Vitamin D Levels
The best way to assess your status is through a 25-hydroxyvitamin D test (25(OH)D), which reflects your circulating levels.
- Vitamin D Test – measures total 25(OH)D to assess deficiency or sufficiency
This test is done using a convenient dried blood spot sample — no lab visit required.
📊 What’s a Healthy Vitamin D Range?
- <30 nmol/L – Deficient
- 30–50 nmol/L – Insufficient
- 75–125 nmol/L – Optimal
- >150 nmol/L – Potentially excessive (consult a healthcare provider)
Vitamin D needs vary depending on age, weight, genetics, sun exposure, and health conditions. Testing provides the data needed to personalise your approach.
🌞 How to Increase Your Vitamin D Levels
- Take 1000–2000 IU of vitamin D3 daily for general maintenance
- Use higher doses (up to 5000 IU) short-term under guidance if severely deficient
- Pair with vitamin K2 to support calcium transport and bone health
- Get 15–30 minutes of midday sun exposure when possible (without sunscreen)
- Retest every 3–6 months to ensure you’re in the optimal range
🎯 Why Testing Matters
Guessing your vitamin D status based on symptoms or lifestyle isn’t reliable. Too little and you risk chronic health issues; too much, and you risk toxicity. Testing gives you the clarity to supplement smartly and effectively.
Know your numbers. Optimise your levels. Feel your best.
Order your Vitamin D Test today and take control of your health.
🔎 FAQs About Vitamin D Testing
How is your Vitamin D test performed?
Our test uses a dried blood spot (DBS) collection method. It only requires a few drops of blood from a finger prick and is analysed for 25(OH)D using LC-MS/MS.
Should I stop taking vitamin D before testing?
If you’re already supplementing, continue as normal to measure your current maintained level. If you want a “baseline” result, stop for 5–7 days before testing (check with your doctor first).
Is there a difference between vitamin D2 and D3?
Yes. Vitamin D3 (cholecalciferol) is the preferred form as it is better absorbed and more effective at raising blood levels than D2 (ergocalciferol).
How often should I test?
We recommend testing every 3–6 months, especially in winter or if adjusting your supplement dose. Once stable, annual testing is usually sufficient.
