Potassium, 24 hr Urine

This test measures how much potassium your body excretes over 24 hours, revealing your kidney function and electrolyte balance. It helps identify whether you're retaining or losing too much potassium, which can affect muscle function, heart rhythm, and blood pressure.

Athletes lose potassium through sweat during intense training and endurance events, making 24-hour urine potassium useful for assessing renal handling during high training loads. This is particularly relevant for endurance athletes, those training in hot conditions, or anyone on diuretics or strict dietary protocols, as abnormal levels can impair muscle contractility and recovery.