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Clinical Value of Basal Serum Progesterone Prior to Initiate Ovarian Hyper-Stimulation with GnRH Antagonists: A Retrospective Cohort Study

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Date 2016 Aug 15
PMID 27522226
Citations 6
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Abstract

Background: The routine assessment of day 3 serum progesterone prior to initiation of ovarian hyper-stimulation with the use of GnRH antagonists is under debate. In this study, we evaluated the clinical utility of this policy.

Methods: Retrospective cohort study of women undergoing in vitro fertilization (IVF) with the use of GnRH antagonists aimed at determining the frequency of cases with progesterone levels exceeding the recommended threshold of 1,660 pg/ml and at evaluating whether this assessment may be predictive of pregnancy.

Results: Serum progesterone exceeded the recommended threshold in one case (0.3%, 95% CI 0.01-1.5). The median (interquartile range) basal progesterone in women who did (n = 95) and did not (n = 217) become pregnant were 351 (234-476) and 380 (237-531) pg/ml, respectively (p = 0.28). The 90th percentile of the basal progesterone distribution in women who became pregnant was 660 pg/ml. Cases with serum progesterone exceeding this threshold in successful and unsuccessful cycles were 10 (10%) and 30 (14%), respectively (p = 0.47). The capacity of basal progesterone to predict pregnancy was evaluated using receiver operating characteristic curve (area under the curve = 0.54, 95% CI 0.47-0.61, p = 0.28). No graphically evident threshold emerged.

Conclusion: Routine day 3 serum progesterone assessment in IVF cycles with the use of GnRH antagonists is not justified. Further evidence is warranted prior to claiming its systematic use.

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