Recurrent Implantation Failure: What to Review Before Your Next Transfer
Before another transfer after repeated failures, the highest-value move is a structured review of what has already been checked — not more random testing. The checklist below organizes the evidence-based work-up into uterine, embryo, and systemic buckets so nothing obvious is missed and nothing unproven is over-ordered. A normal cavity plus normal embryos with no cause found is common, and it does not mean “nothing can be done.” General education, not individual medical advice.
The six-step pre-transfer review
- Uterine cavity — saline sonohysterography (SHG) or hysteroscopy. Remove polyps, resect submucosal fibroids or a septum, and rule out adhesions (Asherman).
- Endometrial lining — record thickness and pattern at each transfer; investigate chronic endometritis (biopsy / CD138) if indicated; optimize with estrogen and protocol choice.
- Hydrosalpinx — check by ultrasound/HSC; a salpingectomy before transfer improves odds when present.
- Embryo competence — factor in maternal age; consider PGT-A especially with recurrent aneuploidy or advanced age; review embryo grades honestly.
- Sperm — semen analysis plus DNA fragmentation (DFI) if not yet done (why it matters).
- Systemic — BMI/smoking; thrombophilia testing only if history suggests it; avoid routine unproven immune panels.
Test → why → evidence level
| Review item | Why it matters | Evidence strength |
|---|---|---|
| SHG / hysteroscopy | Detects polyps, fibroids, septum, adhesions | High (structural) |
| PGT-A | Selects chromosomally normal embryos | Moderate–High (selected cases) |
| Sperm DFI | Unseen by standard analysis; tied to loss | Moderate |
| Chronic endometritis work-up | Treatable cause of failure | Moderate |
| Thrombophilia panel | Only if personal/family history | Low–Moderate (specific) |
| Routine immune assays | Often marketed, not guideline-recommended | Low (not routine) |
What this review can and cannot do
- Can: find a treatable structural or genetic cause and stop low-value testing.
- Cannot: guarantee a pregnancy, or always find a cause — “unexplained” remains frequent.
Related reading
- The framework behind RIF: What Is Recurrent Implantation Failure?
- Read your own records: How to Read Your IVF Transfer and Implantation Record
- Avoid over-testing: RIF and Unexplained: What the Evidence Can—and Cannot—Tell You
- Decide on protocol changes: Should You Change Your Transfer Protocol After RIF?
Your next step
Not sure what’s been covered? The IVF Case Clarity Assessment turns your history into a checked/unchecked review you can bring to the clinic.
Medical disclaimer
General education only; not individual medical advice. Testing and treatment are decisions made with your reproductive specialist.
References
- Coughlan C, et al. Recurrent implantation failure: definition and management. Reprod Biomed Online. 2014;28(1):14–38.
- Practice Committee of ASRM. Role of immunotherapy in in vitro fertilization: a committee opinion. Fertil Steril. 2018 (updated).
- Practice Committee of ASRM. Preimplantation genetic testing: a committee opinion. Fertil Steril. 2024.
- Simon A, Laufer N. Assessment and treatment of repeated implantation failure following IVF-ET. Hum Reprod Update. 2012.