The paper analyzes the suicide records of death certificates (DC) of Itabuna and around (Bahia) between 2010 and 2012, comparing them with the corresponding information recorded in DataSUS . The data contained in the DC of the Forensic Institute Itabuna were analyzed with a follow-up of their registration flow, comparing them with the DataSUS final data. The research results show: suicide frequency data for the period and region based on DC; comparison between the frequencies obtained in the primary source and DataSUS; steps of the registration flow; problems that contribute to underreporting.