Castro Carvalho, CSilveira Reis, IMachado, AI2022-07-292022-07-292022Acta Obstet Ginecol Port 2022;16(2):163-165http://hdl.handle.net/10400.17/4174The contraceptive implant is the most effective method of reversible contraception. Observational and trial data indicate that this method remains effective beyond the initially approved duration of use. We report a case of etonogestrel serum levels above the supposed threshold value for ovulation suppression nine years after implant insertion.engEtonogestrel implantContraceptive effectivenessNexplanon®Implanon NXT®Family planningMAC GINUse of Etonogestrel Implant Beyond Approved Duration – A Case ReportUso do Implante de Etonogestrel Além da Duração Aprovada – Um Caso Clínicojournal article