# Commission Regulation (EU) No 544/2011 of 10 June 2011 implementing Regulation (EC) No 1107/2009 of the European Parliament and of the Council as regards the data requirements for active substances (Text with EEA relevance) (repealed), Division 4.2.5: Residues in body fluids and tissues

Extent: E+W+S+N.I.

Where an active substance is classified as toxic or highly toxic appropriate analytical methods must be submitted.
The specificity of the methods must enable the parent compound and/or relevant metabolites to be determined, using an additional confirmatory method if appropriate.
The repeatability, recovery and the limit of determination including the individual and mean recovery must be determined and reported. The overall relative standard deviation, as well as the relative standard deviation for each fortification level must be experimentally determined and reported.

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Source: https://www.legislation.gov.uk/eur/2011/544/annex/part/A/division/4/division/4.2/division/4.2.5 (the official version)
Page: https://openlegislation.uk/eu-regulation-2011-544/annex/part-A/division-4/division-4.2/division-4.2.5
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.