IUI Treatment: Who It Suits and When to Go Straight to IVF

Many couples in Delhi hear the word “IUI” at their very first fertility visit, often before they fully understand what it involves or whether it is the right step for them. IUI treatment (intrauterine insemination) is simpler, gentler and less expensive than IVF, but it only works well for certain couples. Choosing it for the wrong reasons can cost months of precious time, especially when age is already a factor. This guide explains who IUI suits, who should go straight to IVF, what has to be in place before the first cycle, and what actually happens on the day itself. For an overview of how the procedure is offered at our centres, see our page on IUI treatment at Ridge IVF.

What IUI actually does (and what it does not do)

In IUI, a semen sample is washed and concentrated in the laboratory so that the most active sperm are separated from the seminal fluid. A thin, soft catheter is then used to place this prepared sample directly inside the uterus, close to the time of ovulation. The aim is simple: to get a larger number of good-quality sperm closer to the egg, bypassing the cervix.

What IUI does not do is just as important. Fertilisation still has to happen naturally inside the fallopian tube. The egg must be released, picked up by the tube, and met by the sperm there. The embryo must then travel down to the uterus and implant on its own. If any of these steps is blocked or impaired, IUI cannot overcome it. That single fact explains most of the “who is it for” decisions below.

Who IUI treatment suits best

IUI is a reasonable first-line option when the basic machinery of conception is working but something is making it less efficient. Typical good candidates include:

• Unexplained infertility in a younger woman, where tests are normal but pregnancy has not happened after a year of trying.
• Mild male factor, such as a sperm count or motility that is slightly below the WHO 2021 reference limits (for example, a concentration a little under 16 million/mL or progressive motility a little under 30%), where washing can still yield an adequate number of motile sperm.
• Ovulation problems, such as polycystic ovary syndrome (PCOS), where tablets or injections can help the ovary release an egg in a controlled way.
• Cervical factors or difficulty with intercourse, including sexual dysfunction, vaginismus or ejaculatory problems.
• Couples who live apart for work, where frozen sperm can be used at the right time.
• Use of donor sperm, when medically indicated and arranged through a registered ART bank as required under the ART (Regulation) Act, 2021.
• Mild endometriosis with open tubes, in selected cases and usually for a limited number of cycles.

Who should go straight to IVF instead

For some couples, starting with IUI simply delays a more effective treatment. Your consultant is likely to recommend IVF treatment or ICSI directly if any of the following apply:

• Both tubes are blocked, or the tubes are badly damaged or swollen with fluid (hydrosalpinx).
• Severe male factor, such as a very low count, very poor motility, or sperm that has to be surgically retrieved. These couples usually need ICSI.
• Low ovarian reserve, shown by a low AMH or low antral follicle count, where every month counts.
• Age around 38–40 or above, where the per-cycle chance with IUI falls and many specialists move to IVF early.
• Moderate to severe endometriosis, which can affect egg quality and tubal function.
• Several failed IUI cycles already behind you.
• A need for genetic testing of embryos, which is only possible with IVF.

None of these are rigid rules. A 39-year-old with excellent reserve may still try one or two IUIs; a 32-year-old with a borderline semen analysis may be advised to skip it. The point is that the decision should be made after testing, not by default.

Prerequisites: what must be checked before the first cycle

Before IUI treatment begins, a basic workup confirms that the essential conditions are in place. At Ridge IVF this is part of the basic infertility workup. The key checks are:

Routine blood tests such as thyroid function, prolactin, haemoglobin and infection screening for both partners are also usually done. If a problem is found, for example a polyp in the uterus, treating it first can improve the chance of success.

Natural-cycle IUI versus stimulated IUI

Natural-cycle IUI

In a natural cycle, no fertility medicines are used. Your own follicle is tracked by ultrasound, and insemination is timed to your natural ovulation, sometimes with an ovulation-predictor kit or a trigger injection. It suits women who ovulate regularly and couples where the main issue is getting sperm past the cervix, such as with sexual difficulties or donor sperm. Its advantages are low cost, few side effects and essentially no extra risk of twins.

Stimulated IUI

In a stimulated cycle, tablets (such as letrozole or clomiphene) or low-dose injections are used to help one, or occasionally two, follicles mature. This is the usual approach for PCOS and for unexplained infertility, where gentle stimulation modestly improves the chance per cycle. The trade-off is a higher risk of multiple pregnancy. Careful ultrasound monitoring is essential; if too many follicles grow, a responsible clinic will cancel the cycle or convert it rather than risk triplets or ovarian hyperstimulation. Your doctor will decide the medicine and the plan; it is not something to self-prescribe.

How many IUI cycles should you try?

Most pregnancies from IUI occur within the first three to four cycles. After that, the chance per additional cycle tends to fall, because couples who have not conceived by then often have an underlying factor that IUI cannot fix. For this reason, many fertility specialists suggest a plan of about three to four well-timed cycles, then a review.

That number should be shortened if:

• the woman is in her late thirties or older;
• ovarian reserve is reduced;
• the cycles show poor response or repeated cancellation;
• new findings appear, such as a drop in sperm quality.

It is worth agreeing on this plan at the start, so that you are not drifting through cycle after cycle without a review point. If IUI does not succeed, moving to IVF is not a failure; it is the next logical step, and the information gathered during IUI cycles (how your ovaries respond, how sperm behave after washing) is useful in planning it.

The day of IUI: what to expect, step by step

1. Timing. Insemination is usually scheduled about 24 to 36 hours after the trigger injection, or after a natural LH surge is detected. Your team will give you an exact time.
2. Semen collection. The male partner provides a fresh sample, usually at the clinic, after a short period of abstinence as advised by the lab (commonly two to five days). Bring identification; samples are carefully labelled and witnessed.
3. Sperm preparation. The andrology or embryology team washes the sample, typically using a density-gradient or swim-up method. This takes about one to two hours. You will usually be told the post-wash motile count.
4. Insemination. The woman lies on the examination table, a speculum is placed, and the prepared sample is gently passed into the uterus through a fine catheter. It takes a few minutes and feels similar to a Pap smear; most women feel little or no pain, perhaps mild cramping.
5. Rest and going home. You may rest for ten to fifteen minutes, then return to normal activities the same day. There is no need for bed rest.
6. The wait. Some women are given progesterone support. A pregnancy test is usually done about two weeks later. Light spotting can occur and is not necessarily a bad sign; follow your clinic’s advice rather than testing too early.

Making each cycle count

Small, practical steps help couples get the most out of a limited number of cycles:

• Keep follicle-tracking appointments on time; ultrasound timing is what makes IUI work.
• Avoid smoking and alcohol, and keep a healthy weight; both partners’ lifestyle affects results.
• Tell your doctor about any fever or illness in the male partner in the past three months, as this can temporarily lower sperm quality.
• Ask for the post-wash sperm count each time, so trends can be tracked.
• Bring all previous reports, including earlier IUI cycle records, to every review.

The emotional side matters too. A two-week wait every month can be draining. Ridge IVF has a counsellor as part of the team, and it is perfectly reasonable to ask for support or to take a break between cycles.

Talk to a Ridge IVF specialist

If you are wondering whether IUI is the right starting point for you, or whether your time is better spent on IVF, a consultation with test results in hand will give you a clear answer. Ridge IVF has offered infertility care in Delhi since 1979, and our consultants can explain the options for intrauterine insemination in your specific situation. Book an appointment at our Jawahar Nagar, Fortis Shalimar Bagh or Burari centre, or call or WhatsApp +91 88001 00326.

This article is for general information and is not a substitute for a personal consultation with a fertility specialist.