ISO 23893-1:2007提供了关于如何对鱼类进行取样以确定生化和生理特性的指南，例如血液、肝脏、肌肉和其他组织的成分和酶活性，以便在现场和实验室中评估鱼类的健康状况。用于此目的的生化和生理变量通常被称为生物标记物。 ISO 23893-1:2007包括以下建议和方法:获取代表性鱼类数量的特定地点样本；在野外和实验室采集鱼类组织样本；以及在分析生化和生理变量之前处理和保存样本。

ISO 23893-1:2007 provides guidance on how to sample fish for determination of biochemical and physiological characteristics, such as the composition and enzyme activities of blood, liver, muscle and other tissues in order to asses the health of fish in the field as well as in the laboratory. The biochemical and physiological variables used for this purpose are often called biomarkers. ISO 23893-1:2007 includes recommendations and methods for: obtaining a site？specific sample of a representative number of fish; sampling fish tissues in the field and in the laboratory; and handling and preservation of samples prior to analysis of biochemical and physiological variables.