What is the difference between IVF and IUI?

IUI (Intrauterine Insemination) places washed, concentrated sperm directly into the uterus around the time of ovulation. Fertilization occurs naturally inside the body. IVF (In Vitro Fertilization) involves stimulating the ovaries to produce multiple eggs, retrieving them, fertilizing them in the laboratory, and transferring the resulting embryo to the uterus. IVF bypasses multiple potential barriers to conception - making it significantly more effective but also more complex and costly.

Is IUI cheaper than IVF?

Yes, significantly per cycle. IUI costs $500-$1,500 per cycle (plus medications). IVF costs $5,000-$15,000 per cycle. However, because IUI success rates are lower (10-20% vs 40-60% for IVF), the cost-per-pregnancy can be comparable. Three failed IUI cycles at $1,500 each ($4,500 total) with no pregnancy is more expensive than one successful IVF cycle at $5,000.

When should you move from IUI to IVF?

Move to IVF after 3-4 failed IUI cycles (the evidence shows that IUI success rates plateau after 3-4 attempts), if you are over 38 (time is a critical factor), if there is moderate-to-severe male factor infertility, if both fallopian tubes are blocked, if there is severe endometriosis (Stage III-IV), or if PGT genetic testing is desired. Many fertility specialists now recommend going directly to IVF for women over 38 to avoid wasting time on lower-probability treatments.

What is the success rate of IUI vs IVF?

IUI: 10-20% per cycle for women under 35 with mild infertility; drops to 5-10% after 35 and below 5% after 40. Cumulative success over 3-4 cycles: 30-40% for women under 35. IVF: 40-50% per cycle for women under 35; 25-35% for ages 35-40; 10-20% for ages 40-42. Cumulative success over 3 cycles: 70-80% for women under 35. The gap widens with age - which is why IVF is recommended earlier for older patients.

IVF vs. IUI: Which Gives Better Results?

Key Takeaways

IUI: Washed sperm placed in uterus. 10-20% success/cycle. $500-$1,500/cycle. Best for mild male factor, unexplained infertility, single women with donor sperm.
IVF: Eggs retrieved, fertilized in lab, embryo transferred. 40-60% success/cycle. $5,000-$15,000. Best for tubal factor, severe male factor, endometriosis, age >38, and when PGT is desired.
Move to IVF: After 3-4 failed IUI cycles, or immediately if age >38, blocked tubes, or severe male factor.
Cost-per-pregnancy: Despite higher per-cycle cost, IVF often equals or beats IUI on cost-per-successful-pregnancy.

📊 WholeCares Patient Data (2025-2026)91% patient satisfaction rate among IVF patients at WholeCares partner fertility centers.
1,200+ international patients treated across all categories from 30+ countries.
100% of partner clinics are JCI-accredited offering both IUI and IVF with transparent pricing.
Evidence-based pathway recommendations — starting with least invasive options when clinically appropriate.
Dedicated fertility coordinators assigned to every patient for data-driven treatment planning.

IUI and IVF are fundamentally different treatments - not just in technique, but in what they can overcome. IUI enhances natural conception by placing sperm closer to the egg. IVF bypasses most natural barriers entirely by creating fertilization in the laboratory ([Mayo Clinic](https://www.mayoclinic.org/tests-procedures/in-vitro-fertilization/about/pac-20384716)). Understanding which barriers you're facing determines which treatment is appropriate.

IUI: How It Works

Intrauterine insemination is a relatively simple procedure:

Optional ovarian stimulation: Oral medications (clomiphene citrate or letrozole) or low-dose injectable gonadotropins to produce 1-3 mature follicles.
Ovulation monitoring: Ultrasound and hormone testing to time the insemination precisely.
Sperm washing: The male partner produces a semen sample, which is processed to concentrate the healthiest, most motile sperm into a small volume.
Insemination: A thin catheter delivers the washed sperm directly into the uterus, bypassing the cervix. The procedure takes 5-10 minutes, is painless, and requires no anesthesia.
Pregnancy test: 14 days later.

When IUI Is Appropriate

Unexplained infertility (under 38, both tubes open, normal semen analysis), as outlined by [ESHRE](https://www.eshre.eu/Guidelines-and-Legal/Guidelines/IUI)
Mild male factor (slightly low count or motility - need ≥5 million total motile sperm post-wash)
Cervical factor (cervical mucus hostility, cervical stenosis)
Donor sperm insemination (single women, same-sex female couples)
Ovulatory dysfunction (when combined with medication to induce ovulation)

IVF: How It Works

IVF is a multi-step process involving ovarian stimulation, egg retrieval, laboratory fertilization, embryo culture, and embryo transfer. For a complete walkthrough, see our IVF treatment process guide.

When IVF Is Necessary

Both fallopian tubes blocked or damaged
Severe male factor infertility (requires ICSI)
Moderate-to-severe endometriosis (Stage III-IV)
Age >38 (time efficiency becomes critical)
Failed IUI cycles (3-4 attempts without success), as recommended by [ASRM](https://www.asrm.org/topics/topics-index/intrauterine-insemination-iui/)
Need for PGT genetic testing
Egg freezing utilization (frozen eggs require IVF to use)
Donor egg cycles

Side-by-Side Comparison

Success rate (under 35): IUI: 10-20% per cycle / IVF: 40-50% per cycle ([HFEA](https://www.hfea.gov.uk/treatments/explore-all-treatments/intrauterine-insemination-iui/))
Success rate (38-40): IUI: 5-10% / IVF: 25-35%
Cost per cycle: IUI: $500-$1,500 / IVF: $5,000-$15,000
Procedure complexity: IUI: Low (10-min office) / IVF: High (multi-week protocol)
Anesthesia: IUI: None / IVF: Light sedation (retrieval)
Genetic testing: IUI: No / IVF: Yes (PGT-A/M/SR)
Freezing embryos: IUI: No / IVF: Yes

The Cost-Per-Pregnancy Calculation

"The decision between IUI and IVF should be data-driven, not emotion-driven. For patients under 38 with mild infertility, IUI is a reasonable first step. But for patients over 38 or with specific diagnoses, going directly to IVF is often both more effective and more cost-efficient."
— WholeCares Partner Fertility Specialist

This is the analysis that changes many patients' perspective. If IUI has a 15% per-cycle success rate and costs $1,200 per cycle, the expected cost per pregnancy is approximately $8,000 (5-6 cycles). If IVF has a 45% per-cycle success rate at $5,500 per cycle through Wholecares, the expected cost per pregnancy is approximately $12,000 (2-3 cycles).

But the equation shifts dramatically when you account for age: for women over 38, IUI success drops below 8% per cycle - making the expected cost per IUI pregnancy $15,000+ across 12+ cycles. At that age, IVF is both more effective and more cost-efficient.

At Wholecares partner centers, both IUI and IVF are available with transparent, all-inclusive pricing. The clinical team will recommend the evidence-based pathway - starting with the least invasive option when appropriate, and escalating promptly when the data supports it.

"We help patients understand the cost-per-pregnancy calculation, not just the cost-per-cycle. When you look at it through that lens, the treatment pathway that initially seems more expensive often turns out to be the better investment."
— WholeCares Fertility Care Coordinator

WholeCares Track Record

WholeCares has supported 1,200+ international patients from 30+ countries, maintaining a 91% patient satisfaction rate for IVF procedures. Partner clinics offer both IUI and IVF with transparent, all-inclusive pricing and evidence-based pathway recommendations. All centers are 100% JCI-accredited with dedicated fertility coordinators for every patient.

This information is for informational purposes only and does not constitute medical advice. Please consult your physician.