You must establish and follow laboratory control processes that are reviewed and approved by quality control personnel, including the following:
Use of criteria for establishing appropriate specifications;
Use of sampling plans for obtaining representative samples, in accordance with subpart E of this part, of:
Components, packaging, and labels;
In-process materials;
Finished batches of dietary supplements;
Product that you receive for packaging or labeling as a dietary supplement (and for distribution rather than for return to the supplier); and
Packaged and labeled dietary supplements.
Use of criteria for selecting appropriate examination and testing methods;
Use of criteria for selecting standard reference materials used in performing tests and examinations; and
Use of test methods and examinations in accordance with established criteria.