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COA vs COC
Hi, we recently were informed by a manufacturer that they will no longer provide a certificate of analysis for a control product used in a clinical study. The manufacturer will provide a COC but no longer will provide the COA. Is this something common or a new trend that others have experienced? From a regulatory perspective, should I be concerned with not obtaining the COA and will the COC be sufficient? Any experience with this or tips would be helpful! Thanks everyone.