title: Fluid and electrolyte disorders. Potassium.
abstract: Plasma and urinary potassium levels are two of the most frequently requested electrolyte investigations. However, the results are often misleading, so that an understanding of basic physiology and disease mechanisms is essential to their correct interpretation.
mesh_terms: D004064:Digestive System / Q000378:metabolism; D004232:Diuretics / Q000009:adverse effects; D006801:Humans; D006947:Hyperkalemia / Q000378:metabolism / Q000628:therapy; D006973:Hypertension / Q000378:metabolism; D007008:Hypokalemia / Q000378:metabolism; D007668:Kidney / Q000378:metabolism; D011188:Potassium / Q000097:blood / Q000378:metabolism*; D014883:Water-Electrolyte Imbalance / Q000378:metabolism*
chemical_list: D004232:Diuretics; D011188:Potassium