21 C.F.R. § 500.88 Regulatory method.
Title 21 - Food and Drugs
(a) The sponsor shall submit for evaluation and validation a regulatory method developed to monitor compliance with FDA's operational definition of no residue. (b) The regulatory method must be able to confirm the identity of the marker residue in the target tissue at a minimum concentration corresponding to the Rm. FDA will determine the LOD from the submitted analytical method validation data. (c) FDA will publish in the [52 FR 49586, Dec. 31, 1987, as amended at 67 FR 78174, Dec. 23, 2002]
Title 21: Food and Drugs
PART 500—GENERAL
Subpart E—Regulation of Carcinogenic Compounds Used in Food-Producing Animals
§ 500.88 Regulatory method.