Injectable contraception: what should the longest interval be for reinjections?

• Main Authors: Markus J. Steiner, Cynthia Kwok, John Stanback, Josaphat K. Byamugisha, Tsungai Chipato, Thulani Magwali, Francis Mmiro, Sungwal Rugpao, Somchai Sriplienchan, Charles Morrison
• Format: Journal
• Published: 2018
• Subjects: Medicine
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=43049168775&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/60635
• Institution: Chiang Mai University

Background: Progestin-only injectable contraceptives continue to gain in popularity, but uncertainty remains about pregnancy risk among women late for reinjection. The World Health Organization (WHO) recommends a "grace period" of 2 weeks after the scheduled 13-week reinjection. Beyond 2 w...