One concrete data point for the thread. Post reference ranges alongside numbers when you share them. Units differ by country — glucose and lipids especially — and half the confusion in these threads is unit mismatch rather than disagreement.
One thing that is still open after TinaHashiRN’s answer:
How often to repeat it, because quarterly seems to be the convention and I cannot find the reasoning?
FDA_TrackerJim said:Post reference ranges alongside numbers when you share them.
There is a second half to this that has not been said yet. Quarterly for the first year is convention rather than evidence, and it is defensible for a simple reason: it is roughly the interval over which HbA1c becomes informative again, since it reflects about three months of glycaemia. After the first year, and once doses are stable, annual is reasonable unless something specific is being followed.
Ask again with the specifics and you will get a better answer than this one.
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Took the whole panel in rather than the one flagged line, and the conversation lasted two minutes instead of generating three more tests.
Dr.ObesityLA said:Quarterly for the first year is convention rather than evidence, and it is defensible for a simple reason: it is roughly the interval over which HbA1c…
Agreed, and reference ranges are laboratory-specific. Comparing your number to somebody else's range, or to a screenshot from another country, is how people convince themselves something is wrong.