Which mineral is represented by the symbol K in blood tests?

The symbol "K" in blood tests represents potassium. This designation comes from the Latin word "kalium," which is the source of the chemical symbol. Potassium is an essential electrolyte in the body, playing a critical role in maintaining proper fluid balance, muscle contractions, and nerve signaling. It is particularly important for heart function, as it helps regulate heartbeats.

In blood tests, measuring potassium levels is vital for assessing a patient’s overall health, especially for those with conditions that can affect kidney function or electrolyte balance. Since potassium levels can significantly influence muscle and nerve function, it is crucial to monitor them during various medical treatments. The presence of potassium in the blood is often part of a standard metabolic panel, which helps healthcare providers readjust treatments and monitor patients' cardiovascular health.