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Blastocyst survival following closed vitrification
| Estimated proportion of cells intact | Survival rate for day 5 | Survival rate for day 6 | Total |
|---|---|---|---|
| <50 % | 2.3 % (16/698) | 5.5 % (25/456) | 3.5 % (41/1154) |
| 50-74 % | 1.7 % (12/698) | 3.7 % (17/456) | 2.5 % (29/1154) |
| ≥75 % | 96.0 % (670/698) | 90.8 % (414/456) | 93.9 % (1084/1154) |
