In Chile, the series control of pharmaceutical products consists of reviewing manufacturing and control documentation, as well as carrying out analytical evaluations based on risk assessment, for each lot or sublot of a pharmaceutical product before its distribution and use. It is mandatory for biological products and for other pharmaceutical products that, for various reasons, the ISP has decided to subject to such control. It is carried out to ensure quality and safety through independent controls. This process includes the lot release subprocess, which applies to vaccines and blood products, and the biological products control subprocess, which applies to other biological products.