This is a control program to evaluate the performance of the official laboratories for control of medicines developed by the Pan American Health Organization/World Health Organization (PAHO/WHO) since December 2001, with the assistance of the United States Pharmacopeia (USP).

Objectives:

• Strengthening the performance in quality control tests;
• Increase communication and exchange of information;
• Harmonize methodologies to facilitate the acceptance/recognition among countries of the validity of the results obtained.