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. Author manuscript; available in PMC: 2019 Apr 1.
Published in final edited form as: Contraception. 2018 Feb 17;97(4):357–362. doi: 10.1016/j.contraception.2018.01.011

Figure 1. Quantities of Exogenous Hormones by Self-Reported Hormonal Contraceptive Use.

Figure 1

The concentration of quantifiable hormones are presented for each women, according to their self-reported hormonal contraceptive use at the time of the sample, for those with quantifiable hormones; women may be represented by more than one symbol if more than one hormone was detected in the sample. The expected hormones were as follows: for injectables users, medroxyprogesterone acetate (MPA) and norethisterone (NET); for oral contraceptive (OC) users, levonorgestrel (LNG) and ethinyl estradiol (EE2); and for implant users, LNG and etonogestrel (ENG). The lower limit of quantification (LLQ) for MPA, ENG, and LNG was 0.02 ng/mL; for EE2 and P4, 0.01 ng/mL; and for NET, 0.04 ng/mL. Results below LLQ were set to half the LLQ value for analysis.