When a couple has been trying for a baby without success, the two treatments people hear about most are IUI and IVF. They are quite different, and the right starting point depends on your tests.
What IUI involves
In IUI, prepared sperm is placed in the womb around the time of ovulation. Fertilisation then happens naturally inside the body. It needs at least one open fallopian tube and a reasonable number of healthy sperm.
What IVF involves
In IVF, eggs are collected and fertilised in the laboratory, and an embryo is placed in the womb a few days later. It bypasses the tubes and lets the embryologist see that fertilisation has happened.
How we decide
- Tubes: if both tubes are blocked, IUI cannot work and IVF is the right choice.
- Sperm: mild problems can be managed with IUI; severe problems usually need ICSI.
- Age and egg reserve: for women over 37, or with a low egg reserve, moving to IVF sooner can save valuable time.
- Time trying and previous treatment: if three or four IUI cycles have not worked, IVF is usually the next step.
The aim is the simplest treatment that gives you a real chance. If you are unsure where you stand, a consultation with both partners’ reports is the best place to start.