Residues surveillance maximum residue limits

Within the EU, in contrast with other areas of food control, there is no obligation to use standardized methods in the surveillance of veterinary medicine residues. Instead, a criterion-based approach applies that defines the performance characteristics that the methods used must meet." However, within the United States and some other countries methods are statutorily prescribed. The method must be able to detect the marker residue, specifically, mefabolife, sum of metabolites, or parent compound at/or below the appropriate regulatory limit (RL), as available. In the EU, the RL for authorized veterinary medicinal products is the maximum residue limit (MRL). The RL for prohibited and unauthorized substances is the minimum required performance limit (MRPL) or the reference point for action (RPA). ° In other cases, especially for unauthorized substances, the Community Reference Laboratory (CRL) Recommended Concentration (RC)" can be applied, although this has no legal standing and is not a limit per se. 

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