Maintaining quality control for drugs whose formulation and testing methods were validated against the USP 39 standard.
: Some countries still use the 2016 guidelines for their local manufacturing systems. The Move to Digital Formats usp 39 pdf
USP maintains compendial notices designed to inform stakeholders of the changing status of standards. For USP 39–NF 34, several supplements and errata were published: Maintaining quality control for drugs whose formulation and