CARVALHO, Carolina Castro; REIS, Inês Silveira    MACHADO, Ana Isabel. Use of Etonogestrel implant beyond approved duration - A case report. []. , 16, 2, pp.163-165.   30--2022. ISSN 1646-5830.

The 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.

: Etonogestrel implant; Contraceptive effectiveness; Nexplanon®; Implanon NXT®; Family planning.

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