Why ketone numbers need context
A ketone reading on its own is not a diagnosis, and it is not a score that simply gets better as it rises. Blood, breath, and urine ketones each behave differently, and the same number can mean something very different depending on symptoms, glucose, diabetes status, and whether the user is measuring for lifestyle keto or for a clinician-led therapeutic reason.
That is why this page is framed as a ketone range interpreter rather than a ketone success score. It explains likely categories while still surfacing red-flag safety advice where it matters.