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. Author manuscript; available in PMC: 2023 Jun 1.
Published in final edited form as: Contraception. 2023 Feb 12;122:109975. doi: 10.1016/j.contraception.2023.109975

Table 3.

Selected characteristics of study participants with HIV on efavirenz 600mg-based ART who received double-dose LNG implant (300LNG+ART) and had possible ovulatory activity over 99-weeks post-implant placement.a

Participant ID Progesterone, ng/mLb Progesterone measurement, week post-implant Age, years Weight, kg Plasma LNG, pg/ml LNG measurement, Week post-implant
3 7.0 36 44 65.0 318 36
7.8 50 69.0 256 48
16 7.4 48 34 54.0 373 48
5.0 99 55.0 643 96
17 3.8 98 32 50.0 353 96
5.3 99 - -
18 4.2 48 35 81.0 319 48
19 3.2 4 28 44.0 655 4
20 6.0 98 44 68.0 177 96
23 5.2 48 28 53.0 130 48
29 11.9 24 35 49.0 530 24
5.7 49 49.0 540 48
5.7 50 - -
8.5 97 50.0 751 96

ART = antiretroviral therapy; LNG = levonorgestrel; SHBG = sex hormone binding globulin

a

Serum progesterone concentration thresholds associated with recent ovulation were ≥3 ng/mL or ≥5 ng/mL [16, 17].

b

To convert progesterone to SI units multiply by 3.179.