Take a Potassium Test to screen for or monitor kidney disease. Potassium (K+) is a major electrolyte in the body and is particularly important for maintaining the electric charge on the cell membrane. This charge allows nerves and muscles to communicate and is necessary for transporting nutrients into cells and waste products out of the cell. The concentration of potassium inside cells is about 30 times that in the blood and other fluids outside of cells. Potassium levels are mainly controlled by the steroid hormone aldosterone.
Small changes in the potassium concentration outside cells can have substantial effects on the activity of nerves and muscles. This is particularly true of heart muscle. Low levels of potassium cause increased activity (which can lead to an irregular heartbeat), whereas high levels cause decreased activity. Either situation can lead to a heart attack in some circumstances.
In normal people, taking potassium supplements or potassium-containing drugs is of no benefit, because the kidneys efficiently dispose of excess potassium.
Call LabSafe toll free at 1-888-333-LABS to speak with a Medical Counselor for further information, or simply place your order for a Potassium Test online.
