Your potassium levels can indicate underlying health conditions like high blood pressure or kidney disease. A doctor may perform a potassium blood test as part of a routine physical. A potassium test ...

A potassium blood test measures the potassium level in your blood to check your general health and diagnose conditions.

In the right amounts, the mineral potassium helps your nerves and muscles “talk” to each other, moves nutrients into and waste out of your cells, and helps your heart function. Kidney disease is a ...