How Vitamin B12 appears on your report
Look for Vitamin B12. The result is normally shown in pmol/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: diet, absorption, stomach and bowel health, supplements and some medicines can affect it. The full blood count adds useful context.
Vitamin B12 range in Australia
Vector tracks Vitamin B12 against an optimal range of 145–637 pmol/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 B12
A single marker rarely explains itself. These results are commonly interpreted together with Vitamin B12, and Vector keeps them within reach of each other as your record grows.
Tracking Vitamin B12 over time
One Vitamin B12 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 B12 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 B12 range in Australia?
Australia has no nationally harmonised reference interval for Vitamin B12, 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 B12 against an optimal range of 145–637 pmol/L, which is deliberately tighter than a population reference interval.
What is the optimal Vitamin B12 level?
Vector treats 145–637 pmol/L as the optimal range for Vitamin B12. 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 B12 reported in on Australian pathology reports?
Vitamin B12 is usually reported in pmol/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 B12 result?
Diet, absorption, stomach and bowel health, supplements and some medicines can affect it. The full blood count adds useful context.
Sources
- RCPA Manual: Vitamin B12Australian 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