Who Is a Candidate for IUI Insemination? Tube Health, Sperm Findings and Age Considerations

The folder on the kitchen table is getting thick. Two semen analyses, a printout from a dye test of the fallopian tubes, a cycle-tracking app that now knows more about one person’s mornings than anyone else does. The couple sitting in front of it has been asked to think about intrauterine insemination, and the question they keep circling is not whether it works but whether it is meant for them.

That instinct is right. Asking who is a good candidate for IUI is a better question than asking how often it succeeds, because the answer changes completely depending on three things: whether the tubes are open, what the sperm can do, and how much time the ovaries have left on the clock. Get those three straight and the rest of the decision tends to organize itself.

This explainer walks through each one the way a fertility specialist would in a first consultation, without the hurried feeling.

What actually happens during IUI insemination?

Intrauterine insemination, usually shortened to IUI, is a procedure in which prepared sperm is placed directly inside the uterus around the time an egg is released. The idea is simple: shorten the distance sperm have to travel and time the delivery precisely.

A sample is collected, from a partner or a donor bank, and taken to the lab for a step called sperm washing. Washing means separating the most motile sperm from seminal fluid, debris and sluggish cells, then concentrating them in a small volume of culture medium. Seminal fluid itself must be removed because it contains prostaglandins, chemical messengers that can trigger painful uterine cramping if placed directly in the womb.

Timing is the other half of the craft. Ovulation is confirmed either with home urine tests that detect the hormone surge preceding egg release, or with an injection that prompts the follicle to release its egg on schedule. According to Mayo Clinic, the insemination itself is generally performed about 24 to 36 hours after that trigger or detected surge, and the procedure in the room takes roughly 15 to 20 minutes, most of which is preparation.

The clinician passes a speculum, then threads a thin, flexible catheter through the cervix and releases the sperm near the top of the uterine cavity. Most people describe it as similar to a cervical screening test: brief pressure, sometimes a cramp, rarely anything more. You lie still for a short while afterward, then go home. There is no anesthesia and no incision.

Everything that follows depends on biology the catheter cannot change. The sperm still have to swim into a fallopian tube, meet an egg that has been released, fertilize it, and the resulting embryo still has to travel back and implant. IUI helps with the first leg of the journey. It cannot compensate for a route that is closed or an egg that is not there.

Who is a good candidate for IUI? The four questions specialists ask first

Fertility teams rarely say yes or no to IUI in a single breath. They run through a short mental checklist, and understanding it lets you follow the reasoning instead of just receiving a verdict.

First, are the tubes open? At least one patent fallopian tube is non-negotiable, because fertilization happens inside the tube, not the uterus. Second, is ovulation happening, or can it be made to happen reliably with medicine? An insemination timed to a cycle that never releases an egg is timed to nothing. Third, what does the semen analysis show, and more specifically, how many progressively motile sperm remain after washing? Fourth, how old is the person carrying the pregnancy, and what do markers of ovarian reserve suggest about the number of eggs left?

Those four questions matter more than any others because IUI is a low-intervention treatment. It nudges probability rather than overriding biology. When the underlying machinery works reasonably well and one modest barrier is in the way, a nudge can be enough. When several parts are compromised at once, the nudge gets lost.

Both the NHS and CDC define infertility as not conceiving after 12 months of regular unprotected intercourse, shortened to 6 months when the woman is 35 or older. That definition is also the usual gateway to being assessed at all. Before IUI is proposed, a standard workup typically includes a semen analysis, some form of tube assessment, confirmation of ovulation and baseline hormone tests. Candidacy is decided on the results of that workup, not on hope.

The rest of this article takes each question in turn, then looks at the situations where IUI is a natural fit, the situations where it is usually skipped, and what a realistic course of treatment looks like.

Tube health: why at least one open fallopian tube is the deal-breaker

Picture the uterus as a house and the fallopian tubes as two narrow hallways leading to rooms where the egg is waiting. IUI delivers guests to the front door. If both hallways are bricked up, nobody meets anybody, no matter how many guests arrive.

Tube patency, meaning whether a tube is open along its full length, is usually checked with a hysterosalpingogram. That is an X-ray taken while contrast dye is pushed gently through the cervix; if the dye spills out of the far end of a tube, that tube is open. Some centers use a saline and ultrasound version instead, and laparoscopy, keyhole surgery under general anesthesia, is reserved for cases where the picture is unclear or endometriosis is suspected.

Common reasons a tube may be blocked include past pelvic infection, particularly untreated chlamydia or gonorrhea, previous ectopic pregnancy, endometriosis, and scarring from abdominal or pelvic surgery. The NHS lists damaged or blocked tubes among the leading identifiable causes of female infertility.

Two findings change the conversation entirely. A hydrosalpinx is a tube that is blocked at its far end and swollen with fluid; the fluid can leak back into the uterus and is associated with lower implantation, so many teams recommend addressing it before any treatment. Bilateral tubal blockage, both tubes closed, rules out IUI and points toward IVF, which bypasses the tubes by fertilizing eggs in the laboratory.

One open tube is a gray area. Some teams proceed with IUI, particularly if ovulation can be seen on the same side as the open tube, while others weigh the wasted cycles when the egg is released on the blocked side. That judgment belongs to the treating team, informed by which tube is open and why the other one is not.

IUI with low sperm count: what the semen analysis really tells you

The most misread document in fertility care is the semen analysis. People see a number flagged as low and assume the door is shut; others see everything within range and assume the male side is settled. Both conclusions overreach.

A semen analysis measures volume, concentration, the percentage of sperm that move, the percentage that move purposefully forward (progressive motility), and morphology, meaning the proportion with a normal shape. The World Health Organization publishes reference limits derived from men whose partners conceived within 12 months. In the current WHO manual, the lower reference limits are approximately 16 million sperm per milliliter, about 42 percent total motility, 30 percent progressive motility and 4 percent normal forms. Those are the 5th percentile of fertile men, not pass-or-fail lines. A man below one of them may still father a child; a man above all of them may still have a problem the test cannot see.

For IUI specifically, the figure clinicians care about most is the total motile sperm count after washing: how many forward-swimming sperm actually make it into the catheter. There is no single internationally agreed cutoff, and the evidence behind common thresholds is observational, so different programs draw the line in different places. What the evidence does consistently suggest is that IUI is best suited to mild male factor, where counts or motility are modestly reduced, and that very low post-wash counts are associated with diminishing returns.

Severe findings shift the recommendation. Azoospermia, no sperm in the ejaculate, cannot be treated with IUI using a partner sample; options include surgical sperm retrieval combined with IVF, or donor sperm with IUI. Very poor motility or morphology often leads teams to suggest IVF with intracytoplasmic sperm injection, in which a single sperm is injected directly into an egg. Because semen quality varies from week to week, a single abnormal result is usually repeated before any decision is made.

What is the best age for IUI? An honest look at age considerations

There is no birthday after which IUI stops being allowed, but there is a curve, and it is steeper than most people expect. Fertility is highest in the 20s and declines gradually through the early 30s, then more quickly after 35, largely because the number and chromosomal quality of remaining eggs both fall. The NHS and CDC both flag 35 as the age at which evaluation should begin after 6 months rather than 12, precisely because time becomes the scarcest resource.

Why does that matter more for IUI than for other treatments? Because IUI works one egg at a time, or a few at most with stimulation, and it relies on the cycle doing most of the work. When egg quality is the main obstacle, delivering sperm more efficiently does not fix it. IVF, by retrieving several eggs at once and observing which embryos develop, offers more ways to compensate. This is the mechanism behind the common clinical stance that IUI is a more reasonable first step under roughly 35, becomes a shorter trial in the late 30s, and is rarely the preferred starting point in the 40s using one’s own eggs.

Age is a proxy, not a measurement. Teams usually pair it with ovarian reserve testing: an antral follicle count on ultrasound, which counts the small resting follicles visible early in the cycle, and blood tests such as anti-Müllerian hormone, a protein produced by those follicles. A 38-year-old with a robust reserve and a 31-year-old with a very low one may receive opposite advice.

Male age matters too, less dramatically. Sperm quality and DNA integrity decline slowly with age, which is one reason the male partner’s evaluation is not skipped simply because the female partner is young.

The candid summary is that younger is better for IUI, but the treating team will be looking at your reserve results and your history, not just the year on your identification.

Who is IUI most useful for? Situations where it fits naturally

Some scenarios are almost tailor-made for insemination, because the barrier to pregnancy is exactly the barrier IUI removes: getting healthy sperm to the right place at the right time.

Donor sperm is the clearest example. Single women, female same-sex couples and couples using donor sperm for a genetic reason have no fertility problem to treat; they need sperm delivered at ovulation. UK national fertility guidance, summarized by the NHS, specifically lists people who need donor sperm, people who cannot have vaginal intercourse for physical or psychological reasons, and couples where one partner has a viral infection such as HIV and washing is used to reduce transmission risk, as groups for whom IUI should be considered.

Cervical factor is another. Cervical mucus can be thick, scant or hostile after surgery to the cervix; IUI simply bypasses it. Ejaculatory problems, including retrograde ejaculation and some spinal cord injuries, can be worked around when a sample can be obtained.

Unexplained infertility is the largest and most debated group. Everything tests normal and pregnancy still does not happen. Here IUI, often combined with ovarian stimulation, is a common step, although the same UK guidance advises that many such couples under 35 can reasonably continue trying naturally before moving to treatment, because a meaningful share conceive without help.

Mild male factor and mild endometriosis round out the usual list. In both, the reproductive system is mostly working and IUI is asked to tilt the odds rather than rescue the situation.

What unites all of these is a single, modest obstacle, an open tube and a reasonable egg supply. When someone asks who IUI is most successful for, that combination is the honest answer, more than any diagnosis label.

Who is not a good candidate for IUI, and who is usually asked to wait

Saying no to IUI is often an act of kindness, because months spent on a treatment with little chance of working are months not spent on one that might.

The clearest exclusions follow from mechanism. Both tubes blocked means no route for fertilization. A hydrosalpinx usually needs attention before any treatment. Severe male factor, whether very low counts, absent sperm or profoundly poor motility, exhausts what washing can achieve. Untreated significant uterine problems such as large fibroids distorting the cavity or a septum may also need to be addressed first, because implantation depends on a receptive uterus regardless of how sperm arrives.

Advanced reproductive age combined with low ovarian reserve is a softer exclusion. Nothing physically prevents the procedure, but the treating team may advise moving directly to IVF because IUI trials in that setting are unlikely to change the outcome and cost time that cannot be recovered. Moderate to severe endometriosis with pelvic anatomy distorted by adhesions often prompts the same advice.

Then there is the group asked to wait rather than told no. Someone who has not yet ovulated regularly on medicine may be asked to complete a few monitored cycles first. A partner with a recent fever or illness may have a temporarily poor sample and be asked to repeat the analysis after about 3 months, roughly one cycle of sperm production. Someone with an untreated thyroid disorder, uncontrolled diabetes or a very high or very low body weight may be asked to optimize those first, because they influence ovulation and pregnancy safety. Anyone who has not completed the baseline workup, including tube assessment, will generally be asked to finish it before an insemination is scheduled.

None of these are judgments about worth. They are attempts to match a light-touch tool to the jobs it can actually do.

IUI vs timed intercourse vs IVF: a side-by-side summary

People usually meet IUI as one option in a short menu. Seeing the menu laid out clarifies why a team might steer toward or away from it.

Question	Timed intercourse (with or without ovulation medicine)	IUI	IVF
What it changes	Timing, and ovulation if medicine used	Timing plus sperm concentration and placement	Fertilization and embryo selection in the lab; bypasses tubes
Needs an open tube?	Yes	Yes, at least one	No
Sperm requirement	Normal or near-normal	Mild reductions acceptable; needs adequate motile count after washing	Very few sperm can suffice with intracytoplasmic injection
Typical fit	Young, ovulation problems only, short duration of trying	Donor sperm, cervical factor, mild male factor, unexplained, sexual difficulty	Tubal disease, severe male factor, older age or low reserve, failed IUI
Invasiveness	None	Office procedure, minutes, no anesthesia	Injections, egg retrieval under sedation, embryo transfer
Main risk	Multiples if stimulated	Multiples if stimulated; infection rare	Ovarian hyperstimulation, procedural risks

Two things stand out. First, IUI and timed intercourse share nearly every requirement; IUI adds a modest advantage in sperm delivery, which is why it is most persuasive when sperm delivery is the actual problem. Second, IVF is the only column that does not need a tube. That single fact explains most referrals that skip IUI entirely.

The table is a map, not a ranking. The right column for you depends on where your particular obstacle sits.

Natural cycle or medicated IUI? What the medicines are doing

IUI can be done in a natural cycle, following the body’s own ovulation, or with medicines that encourage the ovaries to mature one or more follicles. Which approach fits you is a decision for the prescribing clinician, but knowing what each drug class does makes the conversation easier to follow.

Oral ovulation agents come in two main classes. Selective estrogen receptor modulators such as clomiphene block estrogen’s feedback signal to the brain, so the pituitary releases more follicle-stimulating hormone and a follicle grows that otherwise might not. Aromatase inhibitors such as letrozole lower estrogen production briefly, achieving a similar effect by a different route. Both are taken for a few days early in the cycle, with follicle growth checked by ultrasound roughly a week later.

Injectable gonadotropins are the follicle-stimulating hormone itself, given by daily injection. They are more potent and more likely to recruit several follicles, which is why they demand closer ultrasound monitoring and carry a higher chance of twins or more.

A trigger injection of human chorionic gonadotropin mimics the natural surge that releases the egg, allowing the insemination to be scheduled rather than guessed. Mayo Clinic describes the usual window as about 24 to 36 hours after the trigger.

Why medicate someone who already ovulates? The rationale in unexplained infertility is that maturing two follicles instead of one modestly increases the chance that an egg and sperm meet. The trade-off is the multiple pregnancy risk, which is why many teams cancel a cycle if too many follicles develop.

For people who do not ovulate at all, most often because of polycystic ovary syndrome, medicine is not optional; it is what makes the cycle inseminable. Never adjust, start or stop any of these on your own; timing and monitoring are what keep the approach safe.

What the following two weeks usually look like after an IUI

The insemination is the shortest part of the cycle. What comes after is mostly waiting, and knowing the shape of that wait takes some of the sting out of it.

On the day, mild cramping and a small amount of spotting are common, usually from the catheter touching the cervix. Some people notice a little watery leakage afterward; that is the lubricant and cervical mucus, not the sperm, which is already past the cervix in the uterus. Normal activity can generally resume straight away, and Cleveland Clinic notes there is no evidence that lying down for a prolonged period improves the chance of pregnancy.

If you took a trigger injection, it can linger in the bloodstream for several days and make a home pregnancy test falsely positive. That is one reason Mayo Clinic advises waiting about two weeks after the procedure before testing. Many teams schedule a blood test at that point rather than relying on urine kits.

Some people are prescribed progesterone, a hormone that supports the uterine lining, during the second half of the cycle. Whether it is used depends on the protocol and the clinician’s judgment, and its side effects, such as bloating and breast tenderness, overlap almost completely with early pregnancy symptoms, which makes the wait a poor time for symptom-spotting.

A negative result is followed by a period, and the next cycle can often begin without a break if you and your team agree. A positive result is usually followed by a repeat blood test to confirm the level is rising, then an ultrasound a few weeks later to check location and number. That scan matters after stimulated cycles, because it is when twins become visible and when an ectopic pregnancy, an embryo implanted outside the uterus, would be picked up.

How many IUI cycles are usually tried before rethinking?

Nobody wants to be told the plan is three tries and then a harder conversation, yet a plan with a stopping point protects you from drifting through a year of near-identical cycles.

UK national fertility guidance, as summarized by the NHS, describes offering up to six cycles of IUI in the groups for whom it is recommended, such as those using donor sperm or unable to have intercourse. In practice many teams review after three to four cycles, particularly when the person carrying the pregnancy is over 35 or when stimulation has been used, because the evidence suggests most IUI pregnancies that are going to happen occur in the earlier attempts, and each later cycle adds progressively less.

Age reshapes the number. Under 35, a longer run of IUI cycles is defensible when the workup is reassuring. In the late 30s, teams often propose a shorter trial before discussing IVF, not because IUI suddenly stops working but because the cost of delay is measured in egg quality that will not return. Over 40, several professional bodies favor moving to IVF sooner, and some teams skip IUI altogether when reserve is low.

Each cycle also generates information. Did the follicle grow as expected? Did ovulation occur when predicted? Was the post-wash sperm count consistent? A cycle that reveals a poor response or an unexpectedly low motile count may change the recommendation faster than the calendar does.

Ask at the outset how many cycles your team envisions and what would trigger a rethink. Having that agreed in advance turns a difficult later conversation into a planned checkpoint. The number belongs to you and your treating team together, and it can be revisited as results come in.

What are the risks and side effects of IUI?

Insemination itself is one of the gentlest procedures in reproductive medicine. Most of what people experience comes from the medicines around it rather than the catheter.

From the procedure, cramping and light spotting are the usual complaints, settling within a day. Infection introduced through the cervix is possible but uncommon, because the catheter is sterile and the cervical canal is not dilated. A small number of people feel briefly faint from cervical stimulation, similar to the reaction some have during a smear test.

From oral ovulation medicines, hot flashes, headaches, mood changes and bloating are the common effects, and both drug classes carry an increased chance of twins compared with unassisted conception. Multiple pregnancy is the risk clinicians take most seriously, because twin and triplet pregnancies bring higher rates of preterm birth, low birth weight and pregnancy complications for the mother. It is the main reason injectable gonadotropins are monitored so closely and cycles are sometimes cancelled when too many follicles grow.

Ovarian hyperstimulation syndrome, in which the ovaries swell and fluid shifts into the abdomen, is mostly a concern with injectable stimulation. It is rare with IUI protocols because the doses used are far lower than those in IVF, but it is not impossible, which is why abdominal swelling or shortness of breath after a stimulated cycle warrants an urgent call.

Ectopic pregnancy risk is not raised by the procedure itself, but it is somewhat higher in anyone with tubal damage, which is one more reason tube assessment comes before treatment.

Emotionally, the two-week wait and the possibility of repeated negatives take a toll that formal risk lists tend to omit. Building in support, whether counseling, a peer group or simply an agreed plan for the day results arrive, is part of doing this well.

What people often get wrong about who IUI is for

Because IUI is simpler than IVF, it attracts a lot of confident folklore. Several of the most common beliefs deserve correcting.

Myth: IUI is just a gentler version of IVF, so it makes sense to try it first no matter what. The two treatments solve different problems. IVF bypasses blocked tubes and compensates for very poor sperm; IUI does neither. Starting with IUI when both tubes are closed is not cautious, it is a cycle that cannot work.

Myth: a normal semen analysis means the male side is fine. WHO reference limits describe the lower range of fertile men, not a guarantee of fertility, and they do not measure DNA quality or function. Equally, a single result below a limit does not settle anything until it is repeated.

Myth: more medicine means a better chance. Higher stimulation mainly raises the odds of multiple pregnancy, which is the outcome teams work hardest to avoid. Many IUI protocols aim for one or two mature follicles, not as many as possible.

Myth: lying flat for an hour afterward keeps the sperm in. The sperm are placed inside the uterus, above the cervix; gravity is not part of the equation, and Cleveland Clinic notes no benefit from prolonged rest.

Myth: a positive test in the first week after a trigger shot means pregnancy. The trigger hormone is the same one pregnancy tests detect and can remain measurable for several days, which is why testing is deferred for about two weeks.

Myth: age only matters after 40. The decline in egg number and quality accelerates from the mid-30s, and that is where candidacy conversations most often shift. Waiting for a round number can quietly narrow your options.

Questions to ask your care team before agreeing to IUI

A good consultation leaves you knowing not just what will be done but why it is the right tool for your particular obstacle. These questions tend to surface the reasoning.

• Has tube patency been confirmed, and if only one tube is open, how will that affect timing and expectations?
• What was the post-wash total motile sperm count on the most recent analysis, and how does our program interpret that figure?
• Given age and ovarian reserve results, is IUI a reasonable first step for us, or would you advise moving toward IVF sooner? What would change your mind?
• Will this be a natural cycle or a medicated one, and if medicated, which class of medicine and what monitoring is planned?
• How many follicles would lead you to cancel a cycle, and how is that decision made?
• How many cycles do you envision before we formally review, and what results during a cycle would prompt an earlier review?
• Will progesterone support be used, and if so, what is the reasoning in our case?
• What is the plan for a positive result, including confirmation testing and the first ultrasound?
• Are there lifestyle factors, medical conditions or medicines either of us should address before starting?
• What counseling or support is available during treatment, and how do we reach the team with concerns between visits?

Write the answers down or bring someone who will. The details that matter most, such as the sperm count figure and the cancellation threshold, are easy to lose in the emotional weight of the appointment. It is also entirely reasonable to ask for a short pause to think before committing to a first cycle; a well-run program will expect that.

When to call your doctor during or after an IUI cycle

Most IUI cycles pass with nothing more dramatic than cramps and impatience. A few symptoms, though, should not wait for the next scheduled visit.

Call the same day if you develop a fever, pelvic pain that is worsening rather than fading, or vaginal discharge that is foul-smelling or unusual after the procedure; these can signal infection, which is rare but treatable when caught early. Heavy bleeding, soaking a pad an hour, is not an expected side effect and needs assessment.

During or after a stimulated cycle, seek care urgently for rapid abdominal swelling, severe abdominal pain, nausea and vomiting that stop you keeping fluids down, sudden weight gain over a day or two, reduced urination, or shortness of breath. These are features of ovarian hyperstimulation syndrome, which is uncommon with IUI-level stimulation but can escalate quickly.

After a positive pregnancy test, one-sided lower abdominal pain, shoulder-tip pain, dizziness or fainting, or bleeding are red flags for ectopic pregnancy and warrant emergency evaluation, particularly if there is any history of tubal damage. Calf pain or swelling, chest pain or sudden breathlessness at any point should be treated as a possible blood clot and assessed immediately.

Emotional warning signs count too. Persistent low mood, inability to sleep, or thoughts of self-harm during treatment deserve the same prompt call as any physical symptom; fertility teams expect these conversations and can connect you with support.

If in doubt, call. The people monitoring your cycle would far rather hear about a symptom that turns out to be nothing than miss one that mattered. And every decision about continuing, pausing or changing treatment stays with you and your treating team, informed by what your body is telling them.

Frequently asked questions

Who is not a good candidate for IUI?

People with both fallopian tubes blocked, a hydrosalpinx, severe male factor infertility or no sperm in the ejaculate are generally not candidates for IUI, because the procedure cannot overcome those barriers. Advanced age with low ovarian reserve, significant uterine abnormalities and moderate to severe endometriosis often lead teams to recommend IVF instead. Some people are asked to wait until ovulation is established or medical conditions are optimized rather than being excluded outright.

Who is IUI most successful for?

IUI tends to be most useful when a single, modest obstacle stands between healthy sperm and a released egg: donor sperm use, cervical factor, difficulty with intercourse, mild male factor or unexplained infertility, in someone with at least one open tube and reasonable ovarian reserve, generally under about 35. Precise success figures vary widely between studies and programs, so your treating team is the right source for expectations specific to your situation.

What is the best age for IUI?

Younger is better for IUI because it depends on egg quality that declines from the mid-30s. Fertility organizations including the NHS and CDC flag 35 as the age when evaluation should start after six months of trying rather than twelve. IUI is commonly considered a reasonable first step under 35, a shorter trial in the late 30s, and less often the starting point in the 40s using one’s own eggs. Ovarian reserve tests refine this.

What are the IUI requirements for the female partner?

The usual requirements are at least one open fallopian tube confirmed by a dye test or similar assessment, ovulation that occurs naturally or can be induced with medicine, a uterine cavity without major abnormalities, and an age and ovarian reserve that make the attempt reasonable. Most teams also want baseline hormone tests, up-to-date screening and stable general health, including thyroid function and blood sugar, before scheduling a cycle.

Can you do IUI with a low sperm count?

Often yes, if the reduction is mild and enough progressively motile sperm remain after washing. IUI is designed for mild male factor, since washing concentrates the best swimmers and places them past the cervix. Very low counts, absent sperm or severely poor motility usually point toward IVF with intracytoplasmic sperm injection, or donor sperm. Because results vary between samples, a low reading is normally repeated before a decision is made.

How many IUI cycles should you try before moving to IVF?

UK national guidance summarized by the NHS describes up to six cycles in groups for whom IUI is recommended, while many teams formally review after three to four, particularly over age 35 or when stimulation is used. The right number depends on age, ovarian reserve, sperm findings and what each cycle reveals about follicle growth and timing. Agree a review point with your treating team before you begin.

Does IUI success change by age?

Yes. Reported outcomes decline with the age of the person carrying the pregnancy, most noticeably after the mid-30s, because fewer eggs remain and a higher proportion carry chromosomal errors that IUI cannot screen for. Exact figures differ between studies and depend heavily on diagnosis and whether medicines are used, so published averages rarely apply neatly to an individual. Your team can put your own age and reserve results in context.

Do you need to ovulate on your own to have IUI?

No. People who do not ovulate regularly, often because of polycystic ovary syndrome, can have IUI once medicine reliably produces a mature follicle, which is confirmed by ultrasound. Oral agents such as selective estrogen receptor modulators or aromatase inhibitors, and sometimes injectable gonadotropins, are used for this. The prescribing clinician chooses the approach and monitoring; a few cycles may be needed to establish a response before insemination is timed.

Can IUI work with only one open fallopian tube?

It can, since fertilization needs only one open tube, but expectations are often adjusted. Some teams track which ovary is releasing the egg and proceed when it is on the open side; others weigh the cycles likely to be lost when ovulation happens on the blocked side. The reason the other tube is blocked also matters, since infection or endometriosis may affect the open tube too. This is a judgment for your treating team.

Is IUI painful or does it require recovery time?

IUI is an office procedure without anesthesia, usually described as similar to a cervical screening test, with brief cramping or pressure as the catheter passes the cervix. Mayo Clinic describes the visit as taking roughly 15 to 20 minutes. Light spotting and mild cramps may follow for a day. Normal activities can typically resume immediately, and prolonged lying down afterward has not been shown to improve outcomes.

References

• NHS: Artificial insemination
• Cleveland Clinic: IUI (Intrauterine Insemination)
• WHO laboratory manual for the examination and processing of human semen, sixth edition
• CDC: Infertility: Frequently Asked Questions

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.