Definicija: A comparison of raw data and associated records with the interim or final report in order to determine whether the raw data have been accurately reported, to determine whether testing was carried out in accordance with the study plan and standard operating procedures, to obtain additional information not provided in the report, and to establish whether practices were employed in the development of data that would impair their validity.

Definicija: Primerjava neobdelanih podatkov in povezanih zapisov z vmesnim ali zaključnim poročilom, da se ugotovi ali se je o neobdelanih podatkih pravilno poročalo, da se ugotovi ali je bilo preskušanje izvedeno skladno z načrtom študije in standardnimi operativnimi postopki, da se pridobijo dodatne informacije, ki niso navedene v poročilu ter ugotovi ali se je pri pripravi podatkov uporabil način dela, ki bi zmanjšal njihovo veljavnost.