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IVF Due Date Calculator: Fresh vs Frozen Transfer
Learn how IVF due dates differ for fresh and frozen embryo transfers.
Abhilasha Mishra
1 tháng 4, 2026
Last updated: 1 tháng 7, 2026
8 min read
Quick Answer
IVF due dates are calculated from retrieval or transfer — not LMP.
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Use our dựa trên nguồn tin calculators to get helpful insights.
AI summaries outline general indicators. However, personal tracking requires comparing your specific baseline. Use our interactive Tính Ngày Dự Sinh (Theo IVF) to help interpret your symptoms.
Fresh vs Frozen: Same Math
After a positive beta, when is my due date? IVF dating uses documented embryo age at transfer — not LMP.
Use IVF Due Date Calculator for retrieval, day 3, or day 5 transfer.
Why LMP Fails for IVF
- Medications override natural cycles
- Conception occurs in the lab
- Transfer date and embryo age are documented
Fresh Transfer Basics
| Transfer | Age on transfer | Typical calculation |
|---|---|---|
| Day 3 embryo | 3 days post-fertilization | Transfer + 263 days |
| Day 5 blastocyst | 5 days post-fertilization | Transfer + 261 days |
Frozen Transfer (FET)
No. A frozen day-5 blastocyst transferred today dates the same as a fresh day-5 transfer. Storage duration does not add days.
Calculator Limits
- Does not predict pregnancy outcome
- Does not replace clinic ultrasound
- Rare dating adjustments need specialist records
Related
FAQ
Q: Is FET due date less accurate? A: No. Same embryo-age logic as fresh transfers.
Q: Retrieval date only? A: Yes, if your clinic dates that way.
Educational content. Confirm your due date with your clinic.
Related Topics
IVF Due Date
Frozen Embryo Transfer
Fresh Transfer