Every range we publish, in one table
Lab reference ranges, clinical guideline thresholds and our own optimal ranges, side by side, sliced by age and sex where the source slices them. Values are converted into the units used in this market; the source is named on every row.
No ranges match that slice
Not every marker has a range published for every age band and sex. Clear the filters to see the full table.
What “optimal” means here, and what it does not
A lab reference range is descriptive: it is the interval that covers most of the population the lab measured, including people who are unwell. It is not a target. Our optimal range is a judgement — a range associated with better long-term outcomes in the studies we cite — and a judgement can be wrong, can shift as evidence lands, and can be the wrong target for you specifically.
Named reviewers set these ranges, the review date is on this page, and the studies behind them are in the references. If your result sits outside a range, that is a reason to ask a clinician a question, not a diagnosis.