RESUMO
Objective To study the difference of electrolyte levels between different peripheral blood samples .Methods A total of 100 patients were enrolled and collected for artery whole blood samples and vein plasma samples .Potassium ,sodium and chloride levels of artery whole blood ,artery plasma and vein plasma were tested by using ROCHE AVL 9180 analyzer .Results Sodium and chloride levels in artery whole blood and artery plasma were statistically different (P0 .05) .Sodium and chloride levels in artery whole blood and vein plasma were statistically different (P0 .05) .Conclusion Sodium and chloride concentration of ar‐terial whole blood and arterial plasma ,vein plasma could be different ,but the concentration of potassium could be reference for each other .