Gender, habits, age, diseases, temporary drug consumption, pregnancy, and geographical origin all potentially affect the protein plasma composition. This, in turn, affects the protein corona composition. As a consequence, this information has to be provided when working with human plasma, not only to better interpret the obtained results but also to give useful information for the design of the safe and efficient nanoparticles in a disease-specific manner. NP: nanoparticle, PPs: plasma proteins