Age

18–35

Sex

FEMALE

Healthy volunteers

Accepted

Age between 18 and 35 years (inclusive), in good general health and requesting contraception.
Has regular menstrual cycles (length of cycle 21-35 days) (i.e., endogenous cyclicity without hormonal contraceptive use).

Levonorgestrel Contraceptive Intrauterine Systems (LCS) Pearl Index Study