Understanding IUI Treatment
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For couples facing male infertility — low sperm count, poor motility, abnormal morphology, or even the complete absence of sperm in the ejaculate — the question of how fertilisation can possibly occur feels overwhelming. ICSI (Intracytoplasmic Sperm Injection) is the answer that has transformed male factor infertility from a near-insurmountable barrier into a highly treatable condition.
ICSI is an advanced IVF laboratory technique in which a single, carefully selected sperm is directly injected into the centre of a mature egg using an ultra-fine glass needle — a micropipette. Unlike conventional IVF — where thousands of sperm must naturally penetrate the egg — ICSI removes the entire competitive process of fertilisation and replaces it with precision science. At Wellspring IVF, ICSI is performed by our dedicated in-house embryology team under Dr. Pranay Shah’s direct supervision using precision micromanipulation equipment. We do not outsource embryology. Your embryos are handled in-house, at every step.

To understand why ICSI is so significant, you need to understand what standard IVF requires of the sperm — and precisely where it fails in male factor infertility cases. The following comparison is the single most important distinction you need to grasp before understanding your treatment options.
| Comparison Point | Standard IVF | ICSI |
|---|---|---|
| Fertilisation method | Sperm placed near egg — must penetrate zona pellucida naturally | Single sperm injected directly into egg cytoplasm by embryologist |
| Sperm quantity required | 50,000–100,000+ motile sperm per egg | Only ONE viable sperm per egg |
| Motility requirement | Sperm must swim to reach and penetrate the egg | Even immotile sperm can be used — motility is not required |
| Where it fails | Fails when sperm count is very low, motility severely reduced, or penetration impossible | Eliminates all competitive fertilisation barriers entirely |
| Fertilisation rate | 50–70% when sperm quality is normal | 70–80% regardless of sperm quality — embryologist controls fertilisation |
| Best suited for | Normal semen parameters or mild male factor | Low count, poor motility, poor morphology, azoospermia, failed fertilisation history |
ICSI is recommended whenever natural fertilisation — even in a standard IVF setting — is unlikely to succeed, or when there is a documented history of fertilisation failure. Dr. Pranay Shah evaluates the complete semen analysis, previous treatment history, and female factor findings before recommending ICSI. Below are the primary indications we treat at Wellspring IVF.
Total sperm count below 15 million/mL or total motile count below 5 million makes natural fertilisation unreliable. ICSI bypasses the competitive fertilisation process entirely, requiring only one viable sperm per egg.
When progressive motility is below 32%, sperm cannot physically reach and penetrate the egg in standard IVF. ICSI requires only viability — not swimming ability — making poor motility irrelevant to the fertilisation outcome.
When normal-form sperm is below 4% on Kruger strict criteria, penetration of the zona pellucida is severely impaired. The ICSI embryologist hand-selects the most structurally intact sperm from the entire sample — morphological failure of the majority does not prevent fertilisation.
When no sperm is present in the ejaculate — whether due to obstruction (Obstructive Azoospermia) or production failure (Non-Obstructive Azoospermia) — sperm is surgically retrieved via TESE or PESA. ICSI is the only technique that can utilise these surgically retrieved sperm, which are always present in very small numbers.
When sperm DNA integrity testing reveals a Fragmentation Index above 25–30%, even morphologically normal sperm may carry damaged genetic material that compromises embryo development. ICSI combined with PICSI or IMSI selects sperm at a deeper biological level — beyond what standard ICSI selection can assess.
If a previous standard IVF cycle resulted in zero fertilisation despite adequate egg numbers and apparently normal sperm quality, ICSI is mandated for all subsequent cycles. Something in the natural fertilisation process failed — ICSI removes that variable entirely.
Sperm that has been cryopreserved experiences reduced motility after thawing. Sperm extracted from the testis or epididymis via TESE or PESA is present in tiny quantities. ICSI is always the technique of choice in both scenarios — it does not require high sperm numbers or normal motility to achieve reliable fertilisation.




On the morning of OPU, the male partner provides a semen sample (or the pre-frozen / surgically retrieved sample is thawed). The sample is processed using density gradient centrifugation and swim-up separation to isolate the most motile, morphologically normal sperm from seminal plasma, debris, and dead cells. The final washed preparation represents the elite fraction of the sample — only these are available for ICSI injection.
Eggs retrieved from follicles during OPU are immediately evaluated by our embryologist. Only MII (Metaphase II) eggs — mature, fully developed eggs — are suitable for ICSI. Immature (MI or GV) eggs are identified and set aside. The number of MII eggs is recorded and communicated to Dr. Shah — this determines how many ICSI injections will be performed.
Each mature egg is placed in a micromanipulation dish under the high-powered microscope. A holding pipette secures the egg gently. The embryologist then uses the fine micropipette needle — thinner than a human hair — to pick up a single selected sperm, immobilise it, and inject it directly through the zona pellucida and into the egg cytoplasm. This process takes approximately 30–60 seconds per egg and requires exceptional technical precision.
After injection, eggs are placed in our advanced incubation system replicating the natural fallopian tube environment precisely — controlled temperature, CO₂ concentration, and humidity. Fertilisation is confirmed the following morning (Day 1) by checking for the appearance of two pronuclei (2PN) inside the egg — one from the sperm, one from the egg. 2PN confirmation = successful fertilisation and the beginning of embryo development.
Fertilised eggs are cultured to either Day 3 (8-cell cleavage stage) or Day 5/6 (blastocyst stage) depending on your specific protocol. Blastocyst culture is performed at Wellspring in the majority of cases — Day 5 embryos have significantly higher implantation potential than Day 3 embryos and allow for better embryo selection before transfer.
On Day 3 or Day 5, our embryologist grades each embryo on standardised morphological criteria. The best-quality embryo is recommended for transfer. Additional high-grade embryos are vitrified (freeze-preserved) for future cycles if needed. Dr. Pranay Shah personally performs every embryo transfer at Wellspring — with ultrasound guidance for optimal placement accuracy.
| Feature / Indicator | ICSI | IMSI | PICSI |
|---|---|---|---|
| Magnification | 200–400× | 6,000–10,000× | Standard + hyaluronan binding |
| Nuclear vacuole check | Not possible | Yes — visible & excluded | Partial — via maturity marker |
| DNA fragmentation | Not addressed | Partially mitigated | Directly targeted |
| Best for | Most ICSI cases | Poor morphology, poor embryo quality | High DFI, recurrent failure |
| Available at Wellspring | Yes — standard | Yes — on indication | Yes — on indication |
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| Obstructive Azoospermia (OA) | Non-Obstructive Azoospermia (NOA) |
|---|---|
| Cause: Blockage in vas deferens or epididymis prevents sperm from reaching the ejaculate | Cause: Testicular production failure — sperm are not being produced in sufficient numbers |
| Sperm retrieval: PESA or conventional TESE — sperm found in almost all cases | Sperm retrieval: Micro-TESE — requires surgical search under microscope magnification |
| ICSI success with retrieved sperm: Comparable to ejaculated sperm ICSI rates | Sperm found in approximately 40–60% of Micro-TESE cases; ICSI success when found is comparable |
| Examples: Post-vasectomy, CBAVD, prior epididymal infection | Examples: Klinefelter syndrome (47,XXY), Y-chromosome microdeletion, spermatogenic arrest |
| Outcome Measure | Typical Range |
|---|---|
| Fertilisation rate per MII egg | 70–80% (Wellspring) vs 60–70% industry standard |
| Blastocyst formation rate (Day 5) | 40–60% of fertilised embryos reach blastocyst stage |
| Clinical pregnancy rate per transfer | 40–65% (varies with age, diagnosis, embryo grade) |
| Live birth rate per transfer (age < 35) | 50–60% with good-quality blastocyst transfer |
| Live birth rate per transfer (age > 38) | 25–40% — declines significantly with female age |
| Cumulative live birth rate (2–3 cycles) | 70–80% for patients with good ovarian response |

No — ICSI is significantly superior to standard IVF specifically in male factor infertility cases, or whenever natural fertilisation is unlikely to succeed. For couples with a normal semen analysis where male factor is not a concern, standard IVF (conventional insemination) achieves comparable fertilisation rates with lower technical intervention. Dr. Pranay Shah will advise based on your specific semen analysis and clinical history — not as a routine default.
Large population studies show that ICSI babies have a marginally higher risk of certain chromosomal abnormalities compared to naturally conceived children — primarily because some male infertility conditions have a genetic component that can be transmitted. The absolute increase in risk is very small. For patients where this is a concern (particularly with azoospermia or severe teratospermia), PGT-A (preimplantation genetic testing) of embryos before transfer is available and can significantly reduce the risk of transferring chromosomally abnormal embryos. We discuss this with every patient for whom it is relevant.
ICSI selects and injects sperm at 200–400× magnification, assessing basic shape and motility. IMSI performs the same injection but selects sperm after examination at 6,000–10,000× magnification — revealing internal nuclear defects (vacuoles) that are completely invisible at standard ICSI magnification. IMSI is recommended when ICSI alone has not produced expected outcomes, when morphology is severely abnormal, or when recurrent embryo quality problems suggest deeper sperm nuclear issues.
Yes — in many cases. If the azoospermia is obstructive (a blockage problem), sperm is almost always successfully retrieved via PESA or TESE, and ICSI is performed with these retrieved sperm. If the azoospermia is non-obstructive (a production problem), Micro-TESE identifies viable sperm in approximately 40–60% of cases. When sperm is found, ICSI success rates are comparable to those with ejaculated sperm. A complete evaluation — karyotype, Y-chromosome microdeletion testing, hormonal profile — is recommended before proceeding.
The laboratory ICSI procedure itself — the actual injection of each egg — takes approximately 30–60 seconds per egg. For a typical cycle yielding 8–12 mature eggs, the entire ICSI session takes approximately 1–2 hours. This is performed on the morning of egg retrieval. Neither the male nor female partner is present in the laboratory during this procedure.
ICSI is itemised separately from the basic IVF cycle cost because it involves significant additional embryologist time, specialised micromanipulation equipment, and technical expertise beyond standard IVF. Your complete itemised cost breakdown — including ICSI, culture media, and all laboratory charges — is provided in full at your consultation with Dr. Pranay Shah. We operate a strict no-hidden-costs philosophy.
A complete, itemised quotation is provided at your consultation. For an overview of our IVF and ICSI pricing, visit our IVF cost guide on our Master Hub, or call our team directly at +91 9099946050.