Guidelines for the collection of samples for piperaquine pharmacology analysis

The purpose of this document is to standardize the sample collection procedure during clinical studies of piperaquine antimalarial drugs. This should be considered as a recommendation or as a definition of minimum requirements, created by the Worldwide Antimalarial Resistance Network (WWARN), aiming to achieve homogeneous quality in the pre-analytical phase of studies and to provide guidelines in the processes of collection, processing, preserving, storage, shipment and safe handling of samples from human origin.