The Potassium Level test by Atomic Absorption is a laboratory test used to measure the concentration of potassium in the blood. Potassium is one of the essential electrolytes that play a vital role in body functions, including regulating heartbeat, transmitting nerve signals, and maintaining fluid balance. This test is typically performed when there are suspected health issues related to the kidneys, heart disorders, or fluid imbalances. Abnormal potassium levels, whether high or low, can lead to serious complications such as cardiac arrhythmias. Through this test, physicians can identify the possible causes of health problems and provide appropriate treatment guidance.