Potassium

MeasuredUseful

The salt that governs nerve and heart muscle signalling.

Both high and low levels affect heart rhythm, so it is worth checking on certain medicines.

Part of

How we rate it — Useful

Worth doing for a specific reason — a risk factor, a symptom, an age group.

This rating and the description above were written against published screening guidelines by someone who is not a clinician, and are awaiting review by one. We would rather say that than imply an authority we do not have.

Check-ups that include it

In 51 of the 78check-ups we track — 65%. Cheapest first.

and 39 more.

Also sold as

Every one of these names refers to this same test. Resolving them to one canonical entry is what makes an honest comparison possible.

k · potassium

Information here is for comparing packages, not for diagnosing yourself. Talk to a doctor about which tests you actually need.