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 $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.