Table 3.

Reproductive outcomes after embryo transfer in cycles with different levels of luteal phase progesterone support (1, 143, 144).

References	Progesterone at OPU + 7 days, nmol/L (ng/mL)	Positive hCG per embryo transfer, %	Pregnancy loss, %	Clinical pregnancy, %	Luteal phase support
Humaidan et al. (143)	39 ± 30 (12 ± 9)	29 (14/48)	79 (11/14)	6 (3/48)	Progesterone vaginal gel (90 mg/day)
Humaidan et al. (144)	74 ± 52 (23 ± 16)	48 (63/130)	21 (13/63)	38 (50/130)	hCG 1,500 IU on the day of OPU plus progesterone vaginal gel 90 mg per day
Humaidan et al. (1)	440 ± 25 (138 ± 8)	43 (47/110)	9 (4/47)	39 (43/110)	hCG 1,500 IU on the day of OPU and at OPU + 5 days plus progesterone vaginal gel 90 mg/day

EPL, early pregnancy loss; GnRH, gonadotrophin-releasing hormone; hCG, human chorionic gonadotropin; OPU, oocyte pick-up; P, progesterone.