Related Experiment Video
Updated: Jun 11, 2026

Modified MicroSecure Vitrification: A Safe, Simple and Highly Effective Cryopreservation Procedure for Human Blastocysts
Published on: March 2, 2017
Higher birth rate after recombinant hCG triggering compared with urinary-derived hCG in single-blastocyst IVF
Evangelos G Papanikolaou1, Human Fatemi, Michel Camus
1Center for Reproductive Medicine, Universitair Ziekenhuis Brussel, Vrije Universiteit Brussel, Brussels, Belgium. papanikolaou@irg.gr
Abstract:
In a prospective randomized controlled trial, 119 patients were randomized to receive either recombinant hCG (250 μg) or urinary-derived hCG (10,000 IU) for final oocyte maturation in an antagonist protocol with a fixed dose of recombinant FSH (187.5 IU) and predefined single blastocyst transfer. The delivery rate was improved in the recombinant hCG group compared with the urinary-derived hCG group (44.1 vs. 25.7, respectively); however, adequately powered randomized controlled trials are justified to ascertain whether this difference is true.
Related Concept Videos
In Vitro Fertilization
The IVF process begins with ovarian stimulation, during which reproductive endocrinologists prescribe hormonal medications to stimulate the ovaries to produce multiple eggs instead of the single...
Ovarian Cycle

