How Vitamin D (25-OH) appears on your report
Look for Vitamin D (25-OH). The result is normally shown in nmol/L, next to the reference interval used by the laboratory that ran the test.
Note the collection date before you compare it with anything, along with the context that matters for this marker: sun exposure, season, skin coverage, food, supplements, absorption, liver function and kidney function can affect it.
Vitamin D (25-OH) range in Australia
Vector tracks Vitamin D (25-OH) against an optimal range of 75–150 nmol/L. Australia has no nationally harmonised reference interval for this marker, so the interval printed on your report varies with the laboratory and the assay it used.
Vector’s optimal range is the band the app tracks against and the one printed in the doctor report. Why the two differ.
What to read alongside Vitamin D (25-OH)
A single marker rarely explains itself. These results are commonly interpreted together with Vitamin D (25-OH), and Vector keeps them within reach of each other as your record grows.
Tracking Vitamin D (25-OH) over time
One Vitamin D (25-OH) result is a single point. Import the report into Vector, check the extracted value, unit and collection date, and it becomes the start of a series instead — with each later report adding a dated point you can actually compare against.
Further reading
Vitamin D (25-OH) is read the same way every other result on the report is. These two guides cover that method rather than this marker:
- How to read an Australian pathology report — A practical guide to dates, units, reference intervals and the context that belongs beside an Australian pathology result.
- Pathology report reference ranges: what they mean — Understand the laboratory interval, Australian guidance and the product context Vector adds to a result over time.
Common questions
What is a normal Vitamin D (25-OH) range in Australia?
Australia has no nationally harmonised reference interval for Vitamin D (25-OH), so the range printed on your report varies with the laboratory and the assay it used — always read your result against the interval beside it. Vector tracks Vitamin D (25-OH) against an optimal range of 75–150 nmol/L, which is deliberately tighter than a population reference interval.
What is the optimal Vitamin D (25-OH) level?
Vector treats 75–150 nmol/L as the optimal range for Vitamin D (25-OH). An optimal range is a target the app tracks against, not a clinical threshold, and it can differ from the interval your laboratory prints.
What unit is Vitamin D (25-OH) reported in on Australian pathology reports?
Vitamin D (25-OH) is usually reported in nmol/L on Australian pathology reports. The performing laboratory prints a reference interval in the same unit beside the result, and that interval is the one that governs your individual result.
What can change your Vitamin D (25-OH) result?
Sun exposure, season, skin coverage, food, supplements, absorption, liver function and kidney function can affect it.
Sources
- RCPA Manual: Vitamin DAustralian pathology reference for this test and related result context.
- Healthdirect: vitaminsGeneral consumer context for nutrient testing and supplementation.
Published 2 August 2026 · Updated 3 August 2026 · Author Vector