Vitamin D Test
The 25-hydroxyvitamin D (25-OH-D) blood test — the standard pathology marker for vitamin D status. Most-tested nutrient in Australia, and one of the most commonly low.
One-time payment of A$55. GST included. No subscription.
What this panel measures
- Vitamin D (25-OH): The 25-hydroxyvitamin D form — the standard marker your liver makes from sunlight exposure and dietary vitamin D.
Who this panel is for
Have you noticed any of these:
- mostly indoor work and limited sun exposure
- diligent sunscreen use year-round
- darker skin (which produces less vitamin D from the same sun exposure)
- older adult or post-pregnancy
- frequent colds, low immunity or muscle aches
- winter mood drops in southern Australian states
How it works
- Order online, no GP referral needed.
- Visit any of 2,000+ accredited collection centres across Australia.
- Results delivered same day to your personal dashboard with clear explanations.
Sample and turnaround
Single blood draw, no fasting required. Vitamin D shifts seasonally — late winter typically shows the lowest reading; late summer the highest. Results back same day.
Frequently asked questions
Why test if I'm in Australia?
Sun avoidance, sunscreen, indoor work and skin pigmentation all reduce vitamin D production. Australia has surprisingly high rates of insufficiency — testing tells you where you actually sit.
What's a good vitamin D level?
Australian labs commonly use a reference range starting around 50 nmol/L for sufficiency. Many functional medicine practitioners aim higher (75–125 nmol/L). Discuss results with your doctor before supplementing.
I take a supplement — when should I retest?
After starting or changing supplementation, test 8–12 weeks in. Once stable, once a year is enough for most people.
Can vitamin D be too high?
Yes — usually only with high-dose supplementation. The test can flag this before it becomes a problem.
Keep reading
Guides
- Blood test without a GP referral — Yes — most common blood tests can be self-ordered in Australia. How direct-to-consumer pathology works, what's available, and when you should still see a GP first.
- Private blood test cost — Private blood tests in Australia range from $35 for single biomarkers up to $500+ for comprehensive panels. What you're paying for, what drives the cost, and when private testing is worth it.
Biomarkers explained
- Vitamin D — Vitamin D is the most-tested nutrient in Australia — and one of the most commonly low, even with our climate.
- Vitamin B12 — B12 is essential for nerve function and red blood cell production — and it's commonly low in vegetarians, vegans, and adults over 50.