IUI Treatment in Kolkata: What to Expect at Every Step — and When IVF Makes More Sense
13 August 2026 · 6 min read · Kolkata
If you and your partner have been trying to conceive for a while, IUI (Intrauterine Insemination) is often the first medically assisted step your fertility specialist will recommend — simpler than IVF, gentler on the body, and far more affordable. But a lot of couples in Kolkata walk into their first consultation with very little clarity on what the procedure actually involves, how realistic the success rates are, and at what point they should consider moving to IVF. This guide answers all of that honestly.
What Exactly Is IUI — and How Is It Different from IVF?
IUI stands for Intrauterine Insemination. In plain language: a fertility specialist takes a carefully prepared sperm sample, concentrates the healthiest, fastest-moving sperm, and places them directly inside the uterus right around the time of ovulation.
This shortens the distance sperm has to travel to reach the egg — think of it as giving sperm a significant head start. Unlike IVF, fertilisation still happens inside the body. There are no eggs retrieved, no embryos created in a lab, and no embryo transfer. That is what makes IUI considerably less invasive and less expensive.
At Abha Surgy Centre, couples often ask us, "Is IUI like artificial insemination?" — yes, IUI is a form of artificial insemination, and it is the most commonly performed one worldwide.
Who Is IUI Actually Right For?
Not every fertility challenge calls for IUI. It works best when:
- Unexplained infertility — you have been trying for 12+ months (or 6 months if you are over 35) with no identifiable cause.
- Mild male factor infertility — low sperm count or motility that is borderline, not severely reduced.
- Cervical factor infertility — where cervical mucus may be blocking or impairing sperm movement.
- Ovulatory disorders — such as irregular cycles or PCOS-related anovulation, where medication can stimulate ovulation alongside IUI.
- Donor sperm — single women or same-sex couples using a sperm bank will typically start with IUI.
- Mild endometriosis — where the tubes and uterus are still structurally sound.
IUI is generally not recommended if the fallopian tubes are blocked or severely damaged, if the ovarian reserve (AMH) is very low, or if the sperm count and motility are significantly poor — in those situations, IVF or ICSI is likely the better first step.
The IUI Process: Step by Step
Understanding each phase takes a lot of the anxiety out of the experience.
Step 1 — Initial Evaluation
Before anything else, both partners undergo baseline investigations: a semen analysis for the male partner, and for the female partner — a pelvic ultrasound, Day 2/3 hormonal blood work (FSH, LH, AMH, prolactin), and a hysterosalpingogram (HSG) to confirm the tubes are open.
Step 2 — Ovulation Monitoring or Stimulation
Depending on your cycle regularity, your doctor may recommend a natural IUI cycle (no medication, just tracking ovulation) or a stimulated cycle using oral medications like letrozole or clomiphene, sometimes combined with low-dose injectable gonadotropins. The goal is to ensure one or two mature follicles develop.
Serial ultrasound monitoring — typically 2 to 3 scans across the cycle — tracks follicle growth closely.
Step 3 — Trigger Injection
Once the lead follicle reaches approximately 18–20 mm, an HCG trigger injection is given. IUI is scheduled precisely 36–40 hours after this trigger, timed to coincide with ovulation.
Step 4 — Sperm Preparation
On the morning of the procedure, the male partner provides a semen sample (or donor sperm is thawed). The sample undergoes a laboratory process called sperm washing, which separates motile sperm from seminal fluid and concentrates them. This step typically takes 1–2 hours.
Step 5 — The Insemination
The procedure itself takes about 5–10 minutes. A thin, flexible catheter is passed gently through the cervix into the uterus, and the prepared sperm is slowly released. Most women describe the sensation as mild cramping — comparable to a period cramp. No anaesthesia is needed, and you can return to normal activity almost immediately.
Step 6 — The Two-Week Wait
After IUI, you will likely be prescribed progesterone support (vaginal suppositories or oral tablets). A pregnancy test is done approximately 14 days after the procedure. This fortnight is emotionally the hardest part for most couples — it is normal to feel anxious, and it is okay to reach out to your care team if you need reassurance.
IUI Success Rates: What the Numbers Actually Mean
This is where many clinics are vague or overly optimistic — and it does real harm to couples' expectations. Here is an honest breakdown:
- Per cycle success rates for IUI typically range from 10–20%, depending on age, diagnosis, and whether ovarian stimulation was used.
- For women under 35 with unexplained infertility, per-cycle rates in stimulated IUI cycles can reach the higher end of that range.
- For women over 38, success rates decline noticeably with each passing year.
- Cumulative success rates over 3 IUI cycles are meaningfully higher than a single attempt — which is why most specialists recommend trying 3 cycles before reassessing.
After 3 failed IUI cycles, most fertility specialists — including those at Abha Surgy Centre — will discuss whether moving to IVF or ICSI is the better path forward. IVF offers higher per-cycle success rates and gives the clinical team far more information (embryo quality, fertilisation rates) to guide treatment.
IUI Cost in Kolkata: What to Budget
IUI is significantly more affordable than IVF, which makes it an important first step for many families. In Kolkata, a single IUI cycle (including monitoring scans, sperm preparation, and the procedure itself) typically ranges from ₹8,000 to ₹20,000, depending on the clinic and whether medications are included.
A stimulated IUI cycle — where you add ovulation induction medications and additional monitoring — will cost more than a natural cycle. Always ask your clinic for a complete cost breakdown before starting, so there are no surprises mid-cycle.
IUI vs IVF: The Question Every Couple Asks
IUI and IVF are not competitors — they are sequential steps in a care pathway. IUI makes sense as a starting point when the cause of infertility is mild or unexplained and the anatomy is normal. IVF becomes the better choice when:
- Fallopian tubes are blocked
- Sperm count or motility is significantly reduced (ICSI is added in these cases)
- IUI has failed after 3 cycles
- The woman's age or ovarian reserve makes time a real factor
- Endometriosis is moderate to severe
Moving from IUI to IVF is not a failure — it is a clinical decision that gives you a better chance of achieving pregnancy.
Emotional Realities: What No One Warns You About
The two-week wait after IUI is genuinely difficult. Every twinge, every mild cramp makes you wonder. If the cycle fails, the grief is real — even if "it was just IUI." Couples in Kolkata often share that they felt pressure to stay positive, which made it harder to process disappointment when it came.
Give yourselves permission to feel both hope and anxiety. Lean on each other, talk to your fertility counsellor, and remember: a failed IUI cycle gives your doctor useful information that shapes the next step.
Ready to Take the First Step?
If you are based in Kolkata and thinking about IUI — or wondering whether you should move directly to IVF — the best first step is a thorough fertility evaluation. At Abha Surgy Centre, our fertility specialists take time to understand your full history before recommending a treatment path that genuinely fits your situation.
Book a consultation with our team and come with your questions — there are no wrong ones.
Please note: All medical decisions, including whether IUI or IVF is appropriate for you, should be made in consultation with a qualified fertility specialist based on your individual test results and medical history.
Frequently asked questions
How many IUI cycles should I try before moving to IVF?
Most fertility specialists recommend attempting 3 IUI cycles before reassessing. If three cycles have not resulted in pregnancy, the evidence suggests that moving to IVF typically offers meaningfully better chances — and gives your doctor more clinical information to work with. Your age and diagnosis will also influence this decision.
Is the IUI procedure painful?
Most women describe IUI as mildly uncomfortable rather than painful — similar to period cramps. The catheter insertion through the cervix can cause a brief cramping sensation. The procedure takes about 5–10 minutes, requires no anaesthesia, and you can resume normal activities the same day.
What is the difference between stimulated and natural IUI?
In a natural IUI cycle, your body's own ovulation is tracked and timed without medication. In a stimulated cycle, oral or injectable medications are used to encourage one or two follicles to develop, improving the chance that a mature egg is available. Stimulated cycles generally have slightly higher success rates but cost more and require closer monitoring.
Can IUI work with donor sperm?
Yes. IUI is commonly used with donor sperm from a certified sperm bank — for single women, same-sex couples, or couples where the male partner has no viable sperm. The process is the same: the donor sample is washed and prepared, then placed into the uterus at the time of ovulation.
What is the IUI cost in Kolkata?
In Kolkata, a single IUI cycle typically costs between ₹8,000 and ₹20,000, depending on the clinic and whether ovulation induction medications are included. A stimulated cycle with monitoring scans will be at the higher end. Always ask for a full itemised cost estimate before starting your cycle.
What should I do during the two-week wait after IUI?
Continue any prescribed medications (usually progesterone support), maintain your normal routine, and avoid excessive stress where possible. Light activity is fine. Avoid taking a home pregnancy test too early — wait the full 14 days your doctor recommends to reduce the chance of a misleading result.
Does PCOS affect IUI success rates?
PCOS can cause irregular or absent ovulation, but with the right medication protocol (often letrozole or low-dose gonadotropins), ovulation can be induced and IUI can be very effective. Women with PCOS who respond well to ovulation induction have reasonable IUI success rates, particularly if other factors like sperm quality and tube patency are normal.