Preparing for IUI: tests, medication and what to ask your clinic

If you are preparing for intrauterine insemination (IUI), it is normal to have a long list of questions. Which tests happen first? Will you need medication? What will the day itself feel like? The answer depends on your history, whether you ovulate regularly, sperm results and your clinic’s protocol. This guide can help you have a more informed conversation with your fertility team.

What is IUI?

During IUI, a clinic prepares a semen sample and places it inside the uterus around the time of ovulation. It does not guarantee pregnancy, and it is not the same as IVF: fertilisation, if it happens, still takes place inside the body. IUI may use a partner’s sperm or donor sperm.

What might be checked before IUI?

Your team will decide which tests are relevant to you. A pre-IUI assessment may include:

• Medical and cycle history: period patterns, previous pregnancies or treatments, medications, health conditions and how long you have been trying.
• Ovulation assessment: cycle tracking, blood tests or ultrasound when needed, particularly if cycles are irregular or PCOS is involved.
• Semen analysis: to assess sperm numbers and movement, and whether IUI is a reasonable option with the sample available.
• Fallopian tube assessment: a test such as HSG or HyCoSy may be recommended to check that at least one tube is open.
• Infection and preconception checks: screening required by your clinic, and review of vaccinations, medicines and general health.
• Additional blood tests: thyroid, prolactin or ovarian reserve tests may be considered depending on your history; not everyone needs every test.

If donor sperm is involved, ask the clinic about its screening, consent and storage process. Requirements can vary by location and service.

Which medicines might be used?

Some IUI cycles are natural cycles, without ovulation-stimulating medication. Others use medicine to support or time ovulation. Depending on the plan, your clinician may discuss:

• Letrozole or clomiphene: oral medicines sometimes used to encourage ovulation.
• Gonadotropin injections: another form of ovarian stimulation that usually requires careful ultrasound monitoring.
• An hCG trigger injection: sometimes used to help time ovulation and the IUI appointment.
• Progesterone after IUI: used in some protocols, but not routinely needed for everyone.

These are possibilities, not a shopping list. Medication, dose and monitoring must be chosen by your fertility clinician. Stimulation can produce more than one mature follicle, increasing the risk of multiple pregnancy; a clinic may advise cancelling a cycle if the response is too strong. Do not start, stop or change a prescription based on a blog post.

How can you prepare day to day?

• Ask when to call on day one of your period and which days you need to attend scans or provide a sample.
• Discuss any prescribed medicines, supplements and health conditions with your clinic. Ask about preconception folic acid and the right amount for you.
• Follow the clinic’s instructions for ovulation tests, trigger timing and the semen sample, including any abstinence guidance.
• Arrange transport and time around the appointment; ask what discomfort to expect and when to contact the clinic afterwards.
• Agree on the date for a pregnancy test. Testing too early after an hCG trigger can give a misleading positive result.

Questions worth taking to your appointment

• Why are you recommending IUI for my circumstances, and what alternatives should I understand?
• Do I need a tubal test or further semen testing first?
• Will this be a natural or medicated cycle, and how will you monitor it?
• What happens if too many follicles develop or the timing changes?
• When should I test afterwards, and whom do I call if I have pain, fever or unusual symptoms?

It is okay to ask your clinic to explain the plan more than once. Fertility treatment can carry hope and uncertainty at the same time. You deserve clear information, individual care and space for your feelings throughout the process.

This article is general educational information, not a diagnosis or a treatment plan. Your clinic’s instructions and a qualified clinician’s advice take priority.