for females ages 18-50 (full criteria)
Healthy Volunteers
healthy people welcome
at La Jolla, California
study started
completion around
Principal Investigator
by Sheila Mody, MD, MPH



The investigators will conduct an observational study comparing the number of bleeding days before and after contraceptive implant (Nexplanon) replacement.


There is very limited information regarding number of bleeding days after replacement of the contraceptive implants (Nexplanon). More detailed information on this topic will help clinicians counsel patients and help women decide if they would like to pursue contraceptive implant replacement.

The investigators will conduct a prospective cohort study of (N=114) among women replacing their contraceptive implant. The primary outcome of the study is the difference in number of bleeding days between the 4-week periods before and after implant replacement. Secondary outcomes include satisfaction with bleeding. Additionally, a secondary outcome will be the number of bleeding days in month 2 and month 3 after replacement of the contraceptive implant. The outcomes will be measured in bleeding diaries and satisfaction surveys.

Through a text messaging application, the investigators will send the participants hyperlinks to the diaries/surveys at the stated time points. Participants will report if they had bleeding and the amount based on the Pictorial Blood Assessment Chart (Higham). Participants will complete weekly surveys regarding their satisfaction with their bleeding utilizing a Likert scale. The investigators will also ask participants to complete a survey regarding their satisfaction with their bleeding at end of month 2 and at the end of month 3 after replacement of their contraceptive implant.


Contraception, Contraceptive Usage, Family Planning, Nexplanon, Contraceptive implant, Track bleeding patterns before and after implant


You can join if…

Open to females ages 18-50

  • Reproductive aged women 18-50 years old
  • With a contraceptive implant (for patient participants)
  • Able to consent in English
  • Palpable contraceptive implant

You CAN'T join if...

- Non-palpable contraceptive implant


  • University of California, San Diego
    La Jolla California 92093 United States

Lead Scientist at UCSD

  • Sheila Mody, MD, MPH
    Professor Of Clinical, Ob/Gyn & Reproductive sciences, Vc-health Sciences-schools. Authored (or co-authored) 43 research publications


in progress, not accepting new patients
Start Date
Completion Date
University of California, San Diego
Study Type
About 55 people participating
Last Updated