IUI success rate?

Dr.Anjali Pathak
05 August 2025

IUI Success Rate: What to Expect
1. Per-Cycle Success by Age

• Under 35 years: ≈ 15–20% chance per cycle (up to ~25% in some clinics)
• Age 35–39: ≈ 10–15% per cycle Fertility Plus
• Age 40 and above: ≈ 5–10% per cycle, often closer to 4–7% over age 40 Pacific Fertility Center

• Unexplained infertility: ~7–10%, rising to 15–25% when combined with ovulation‑stimulating drugs
• Male factor infertility: ~16.9% per cycle

• Most pregnancies occur within the first 3–4 IUI cycles—up to 95% within 3 cycles, and 98% by 4 cycles
• After 4 attempts, the benefit of additional cycles drops significantly

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