本标准包含临床实践中未稀释血清、血浆或全血中钠离子和钾离子活性的离子选择电极测量结果表达的建议。美国食品和药物管理局（FDA）已经评估并认可了这一认可级别的共识标准，用于满足监管要求。

This standard contains recommendations for the expression of results of ion-selective electrode measurement of sodium and potassium ion activities in undiluted serum, plasma, or whole blood in clinical practice.The U.S. Food and Drug Administration (FDA) has evaluated and recognized this approved-level consensus standard for use in satisfying a regulatory requirement.