Prognosis | <35 | Age (yr) 35–37 | 38–40 | 41–42 |
---|
Clevage- stage embryos |
 Favorablea
| 1–2 | 2 | 3 | 5 |
 All others | 2 | 3 | 4 | 5 |
Blastocyts |
 Favorablea
| 1 | 2 | 2 | 3 |
 All others | 2 | 2 | 3 | 3 |
-
aFavorable = first cycle of IVF, good embryo quality, excess embryos available for cryopreservation, or previous successful IVF cycle
- Reprinted from Fertil Steril, 99/1, American Society of Reproductive Medicine. Practice Committe Opinion. Criteria for number of embryos to transfer: a committee opinion, 44–6, Copyright (13), with permission from Elsevier [27]