L’importance des études interlaboratoires pour la validation des méthodes d’analyse

Analyse, Lipides, Sécurité, Contaminants, Qualité

 

Intervention de Florence Lacoste, Responsable Département Analyse & Expertise, au World Congress on Oils & Fats, le 11 février 2020 à Sydney : « The importance of interlaboratory studies for the validation of analytical methods ».

Résumé

Analytical procedures are first developed by expert laboratories in order to answer an issue. Internal validation allows the expert laboratory to verify if the method is fit-for-purpose when it is run in his laboratory. However, if the analytical method is to become a reference method (ISO standard for example), an interlaboratory study is generally required.

Interlaboratory studies are studies in which several laboratories analyse the same material. Method-performance or collaborative studies are different from laboratory-performance or proficiency studies, as their goal is different.

Collaborative studies are aimed to assess the performance characteristics of a specific method. These performance characteristics usually have to do with precision. The organisation of a collaborative study usually follows the procedure described either, in ISO 5725 standard or AOAC guidelines.

In the case of a reference method designed for the control of the conformity of a product regarding a regulation such as EC 2568/91 or EC 1881/2006, the precision of the method has to be evaluated in order to verify that the method is compliant with the limit fixed in the regulation, or with the quality criteria fixed within the regulation (EC 333/2007).

The presentation will present the general process for collaborative studies and it will consider some examples of collaborative studies run in the sector of oils and fats.

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