IUI vs IVF decision

IUI (Intrauterine Insemination) involves placing prepared sperm directly into the womb around the time of ovulation, a relatively simple and less invasive procedure. IVF (In Vitro Fertilisation) involves stimulating the ovaries to produce eggs, collecting them, fertilising them with sperm in a lab, and transferring a resulting embryo back into the womb. IVF is more involved but generally has higher success rates for many types of fertility issues.

IVF generally has higher success rates per cycle than IUI, particularly for women over 35 or for certain causes of infertility such as blocked fallopian tubes or significant male-factor infertility. IUI success rates are typically lower but it is less invasive, less expensive, and involves less medication. Your fertility specialist can give you rates specific to your age and diagnosis.

The right choice depends on factors such as your age, the cause of infertility, how long you've been trying to conceive, and personal preferences around invasiveness and cost. IUI is often tried first for unexplained infertility or mild male-factor issues in younger women, while IVF may be recommended sooner for more significant fertility problems. A fertility specialist can guide you through the decision based on your specific test results.

Yes, IUI is generally less invasive, involving simpler monitoring and a quick procedure similar to a smear test, without the need for egg collection under sedation. IVF requires hormone injections, monitoring scans, an egg collection procedure, and an embryo transfer, making it a more involved process overall. This is one reason some people choose to try IUI first if it is clinically appropriate.

An IUI cycle typically takes about two to four weeks from starting monitoring to the procedure itself, similar in length to a natural cycle. An IVF cycle usually takes around four to six weeks from starting stimulation medication through to embryo transfer, with additional time if genetic testing or a frozen transfer is involved. Your clinic can give you a more precise timeline based on your specific protocol.

IUI is generally significantly less expensive per cycle than IVF, since it involves less medication, monitoring, and laboratory work. However, because IVF often has a higher success rate per cycle, the overall cost to achieve a pregnancy is not always higher once multiple cycles are factored in. Your clinic can help you understand the likely overall cost based on your individual chances of success with each option.

Yes, many clinics recommend trying a limited number of IUI cycles, often two to four, before moving on to IVF if pregnancy has not occurred. Your fertility specialist will review your response to IUI and any new information from monitoring to help decide when it is time to switch approach. This stepped approach is common practice in fertility treatment.

IUI carries a lower risk overall, mainly a small chance of infection or a slightly increased chance of multiple pregnancy if combined with ovarian stimulation. IVF carries slightly more risk, including a small chance of ovarian hyperstimulation syndrome (OHSS) and risks related to the egg collection procedure. Your fertility team will monitor you closely throughout either treatment to catch any complications early.

Yes, age is one of the most important factors, since egg quality and quantity decline over time, and IVF is often recommended sooner for women over 35 to maximise the chance of success within a realistic timeframe. Younger women with a clear, less complex fertility issue may reasonably try IUI first. Your specialist will factor your age alongside test results into their recommendation.

It is generally recommended to seek advice after 12 months of trying to conceive without success, or after 6 months if you're over 35 or have a known fertility risk factor. NHS fertility referrals can take 20-45+ weeks depending on your area and eligibility criteria, while private fertility clinics can often arrange a consultation within about 2 weeks. An early consultation gives you more time and options to consider both routes.