The interlaboratory trial “Hormonal Effects” is tailored for users of effect-based in vitro bioassays for the determination of hormonal activity (estrogenicity, androgenicity, progestagenicity) in water and food samples.

Accredited testing laboratories may use the results to meet the requirements of ISO 17025:2018 in that they have participated in an appropriate interlaboratory comparison program as part of their external quality assurance. For non-accredited laboratories, this interlaboratory study enables the assessment of their testing performance in comparison with other laboratories.