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This study was supported by the Canadian Institutes of Health Research (grant number: MOP-230207). Part of the study was also funded by Pfizer Canada, Leo Pharma, and Amgen. The authors declare that they have no relevant financial interests. Study concept and design were contributed by Quintana-Bárcena, Lord, and Lalonde. Quintana-Bárcena, Lord, and Lizotte were responsible for the data analysis, and Quintana-Bárcena and Berbiche performed the statistical analysis. The manuscript was written by Quintana-Bárcena and Lalonde and revised by Quintana-Bárcena and Lalonde, along with the other authors.

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Our results indicate that the effective window of time for insemination by ICSI might be wider than previously thought. It therefore appears that, within appropriate time frames, the management of ICSI cycles involving oocytes from young women in embryology laboratories could be adjusted to accommodate caseloads and workflow with no loss of oocyte viability or cycle efficiency.