In contrast to serum potassium, intracellular potassium levels are more diet-dependent and increase on a linear scale according to dietary intake, specific medical conditions, and the levels of interactive minerals such as sodium, magnesium, lithium, calcium, phosphorus, sulfur, chromium and others. Serum and cellular potassium levels coincide only when both are at a low to normal range, and then only when blood potassium was obtained following all the rules and precautions that assure more accurate measurements. If too much potassium is ingested or retained, intracellular measurements readily pick up those higher levels in otherwise healthy individuals, where there would be no changes in serum potassium. These changes can be used for diagnostic, therapeutic, or preventive purposes... Full Text