TY - CHAP M1 - Book, Section TI - Methods in Clinical Chemistry and General Methods A1 - Laposata, Michael A1 - McCaffrey, Peter Y1 - 2022 N1 - T2 - Clinical Laboratory Methods: Atlas of Commonly Performed Tests AB - The concentrations of the major electrolytes in venous plasma or serum can be determined using ion-selective electrodes for each one. The major ones are sodium (Na), potassium (K), and chloride (Cl). A major preanalytical error involves aggressive handling of the tube (shaking instead of gentle inversion) prior to analysis. It is frequently manifested by an artifactually high value for potassium. Ionized or free calcium, not bound to protein, can also be measured using an electrode specific for calcium. SN - PB - McGraw Hill, LLC CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1187001255 ER -