IVF Add-Ons: Which Ones Work, Which Are Waste, and What t...

Fertility & IVF · 3 · December 2, 2025

The UK's Human Fertilisation and Embryology Authority (HFEA) maintains a traffic-light rating system for IVF add-ons based on evidence quality. Of 11 commonly offered add-ons, zero received a green (proven effective) rating. Most are amber (some evidence) or red (no evidence). Yet clinics worldwide charge $500-$3,000 per add-on.

Evidence-Supported Add-Ons (Amber Rating)

Time-lapse monitoring (EmbryoScope): Allows continuous observation of embryo development without removing them from the incubator. A 2024 Cochrane review found a small but statistically significant improvement in live birth rates (31% vs 28%). Cost: $500-$1,500 in the US, $200-$500 abroad. Verdict: reasonable, especially if included in the base price.

Embryo glue (hyaluronan-enriched transfer medium): A 2023 meta-analysis in Human Reproduction Update showed a 10% relative improvement in live birth rates. Cost: $200-$500. Verdict: probably worth it given the low cost and modest but real effect. Endometrial receptivity analysis (ERA): Identifies the optimal implantation window in patients with repeated implantation failure. A 2024 RCT showed benefit only in the subgroup with 3+ failed transfers. Cost: $800-$2,000.

Unsupported Add-Ons (Red Rating)

Assisted hatching: Thinning or opening the embryo's outer shell before transfer. Cochrane review (2020): no improvement in live birth rates. Intralipid infusions: Proposed to modulate immune response. No RCT evidence of benefit. Cost: $300-$800 per infusion. Endometrial scratching: Deliberately injuring the uterine lining before transfer. The OPTIMIST trial (NEJM, 2023) with 1,300 patients showed zero benefit. Growth hormone co-treatment: Despite biological plausibility, randomized data shows no benefit for unselected patients.

How to Evaluate Add-On Recommendations

Ask three questions: (1) Is there at least one randomized controlled trial showing this improves live birth rates? (2) If so, does the trial apply to my specific situation (age, diagnosis, number of previous failures)? (3) What does the HFEA traffic light system say? Clinics that pressure patients into multiple add-ons without evidence-based justification are prioritizing revenue over outcomes.

Key Takeaways

- Zero IVF add-ons have received a green (proven) rating from the UK's HFEA

- Time-lapse monitoring and embryo glue have modest evidence — reasonable at low cost

- Endometrial scratching was definitively debunked by a 1,300-patient NEJM trial in 2023

- Ask for RCT evidence before accepting any add-on — most lack proven benefit

Compare real-time pricing using our global cost calculator.