The Math No One Shows You
Fertility clinics publish per-cycle success rates — typically 40–55% for women under 35 using fresh embryos. These numbers are accurate but misleading, because they describe a single roll of the dice. The question that actually matters is: how many rolls can you afford?
Cumulative success rates by number of cycles
| Cycles Completed | Cumulative Success Rate (under 35) | Cumulative Success Rate (35–37) | Cumulative Success Rate (38–40) |
|---|---|---|---|
| 1 cycle | 40–55% | 30–40% | 20–30% |
| 2 cycles | 60–75% | 50–65% | 35–50% |
| 3 cycles | 75–85% | 65–78% | 48–62% |
| 4 cycles | 82–90% | 72–84% | 55–70% |
| 5+ cycles | 85–93% | 78–88% | 60–75% |
Approximate cumulative probabilities based on published multi-cycle IVF data. Individual results vary based on diagnosis, protocol, and embryo quality.
The pattern is clear: each additional cycle adds meaningful probability. Going from 1 to 3 cycles can nearly double your cumulative odds of success. But each additional cycle costs another $15,000–$25,000 in the US.
Budget Scenarios: US vs. Colombia
| Available Budget | US Cycles Possible | Colombia Cycles Possible | Difference |
|---|---|---|---|
| $15,000 | 1 cycle | 2–4 cycles | +1–3 additional attempts |
| $25,000 | 1 cycle | 3–5 cycles | +2–4 additional attempts |
| $40,000 | 1–2 cycles | 5–7 cycles | +3–5 additional attempts |
| $60,000 | 2–3 cycles | 7–10+ cycles | +4–7 additional attempts |
This changes everything
A patient with a $40,000 IVF budget in the US gets 1–2 attempts (cumulative success: 40–75% under 35). The same budget in Colombia provides 5–7 attempts (cumulative success: 85–93% under 35). The medical procedures are identical. The labs are equivalent. The protocols are the same. The only variable is price — and price determines how many chances you get.
What's Included in a Colombia IVF Cycle?
When we quote $3,500–$8,500 per cycle at Colombian fertility clinics, here's what's typically included:
- Initial consultation and diagnostic workup
- Ovarian stimulation monitoring (ultrasounds + bloodwork)
- Egg retrieval under sedation
- ICSI fertilization (often included rather than as an add-on)
- Embryo culture to blastocyst (Day 5–7)
- Fresh embryo transfer OR vitrification (freezing)
- Medications (varies — some clinics include, others quote separately)
What's NOT included: flights ($200–$600 round-trip from most US cities), accommodation ($40–$100/night), meals ($15–$30/day), travel insurance ($150–$400), and optional add-ons like PGT-A ($1,000–$2,500) or assisted hatching ($300–$600).
The Flights and Travel Factor
Even factoring in travel costs, the math overwhelmingly favors treatment abroad:
| Item | Per-Trip Cost | Over 3 Cycles |
|---|---|---|
| Round-trip flights (2 passengers) | $600–$1,200 | $1,800–$3,600 |
| Accommodation (14 nights) | $600–$1,400 | $1,800–$4,200 |
| Meals + local transport | $300–$600 | $900–$1,800 |
| Travel insurance | $150–$400 | $450–$1,200 |
| Travel overhead per 3 cycles | $5,000–$11,000 |
Three full IVF cycles in Colombia (clinic + medications + travel): approximately $15,500–$36,500. That's less than one cycle in most US cities.
Beyond the Math: The Psychological Factor
When every cycle costs $15,000–$25,000, the pressure on each individual attempt is immense. "This has to work" becomes the internal refrain — and that pressure adds stress that's counterproductive to treatment.
When you know you have 5–7 attempts ahead of you, the psychological dynamic shifts. A failed first cycle is disappointing but not devastating. You have room to adjust protocols, try different approaches, and allow the cumulative probability to work in your favor. That financial breathing room is itself therapeutic.
A note on diminishing returns
Cumulative success rates plateau after 5–6 cycles. If multiple cycles with good-quality embryos fail to result in pregnancy, your specialist should investigate underlying factors — uterine pathology, immunological issues, or whether a shift to donor eggs would significantly improve outcomes. More cycles isn't always the answer; sometimes a different approach is needed.
Run Your Numbers
Tell us your budget and fertility history. We'll map out how many cycles are realistically possible — and what your cumulative probability looks like at each step.
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