Cervical manipulation via transvaginal ultrasound or sterile vaginal examination does not significantly affect fetal fibronectin results; therefore its use after these exposures is clinically acceptable. Conversely, fFN use in the setting of recent coitus should continue to be discouraged.
Medicine and Health Sciences | Obstetrics and Gynecology
Levy, MD, Ariel; Quist-Nelson, MD, Johanna; and Berghella, MD, Vincenzo, "The Effect of Transvaginal Ultrasound, Vaginal Examination, or Coitus on Fetal Fibronectin Results: A Systematic Review" (2020). Department of Obstetrics and Gynecology Posters. 12.