In donor egg cycles—
Comparable Pregnancy Outcomes Versus IM Progesterone in Women Without Endogenous Progesterone Production1
![]() |
| Study design: Results of a prospective, randomized trial in 72 women receiving progesterone for a donor egg cycle. All patients received estradiol and were randomized to receive Crinone 8% (90 mg BID) or IM progesterone (100 mg QD) in a 7:3 ratio, respectively. Crinone 8% was administered from the evening of cycle day 14 until negative pregnancy test for 2 weeks or for a total of 10 weeks in case of pregnancy; IM progesterone was administered from the evening of cycle day 15 until negative pregnancy test or for a total of 10 weeks in case of pregnancy (with dosage reduced to 50 mg QD in the 8th week). |
- Comparable implantation rates for Crinone 8% and IM progesterone (23% vs 18%, P=NS)
- Comparable pregnancy rates despite lower serum progesterone levels for Crinone 8% versus IM progesterone
- In-phase endometrial biopsies
Reference: 1. Gibbons WE, Toner JP, Hamacher P, Kolm P. Experience with a novel vaginal progesterone preparation in a donor oocyte program. Fertil Steril. 1998;69:96–101.





