IVF Process Step by Step: How In Vitro Fertilization Works

If you are researching the IVF process step by step for the first time, you want a clear, medically accurate walkthrough of what actually happens inside a fertility clinic — not marketing copy. This guide explains in vitro fertilisation as a six-stage assisted reproductive technologies sequence: ovarian stimulation, monitoring, egg retrieval, sperm collection plus lab fertilisation, embryo culture, and embryo transfer. You will learn the drugs used at each step in the IVF process, the timing of every blood test and ultrasound, the mechanism behind intracytoplasmic sperm injection (ICSI), and when add-ons like preimplantation genetic testing or assisted hatching are clinically justified.

Over the past 16 years I have guided more than 7,000 couples through this exact sequence at our Hyderabad fertility clinic. Many of them sat where you are now — uncertain, anxious, but hopeful. By the end of this guide you will understand how a single IVF cycle moves from injection to pregnancy test, what each phase costs in Hyderabad, and which add-on procedures are clinically justified for your case.

Looking for the day-by-day emotional and practical experience of your first cycle? Read our companion guide on what to expect during your first IVF cycle. This article focuses on the medical and laboratory procedures; the companion focuses on how each day feels.

What IVF Is and Who Needs It

IVF (in vitro fertilisation) is the assisted reproductive technologies procedure in which an egg and sperm are combined outside the body in an IVF laboratory, the resulting embryo is cultured for three to five days, and the embryo is transferred back into the uterus. The phrase “in vitro” literally means “in glass” — the fertilisation process happens in a petri dish inside an incubator, not inside the fallopian tube.

IVF treatment is indicated when:

• Tubal blockage or damaged fallopian tubes prevent egg and sperm from meeting naturally
• Severe male factor infertility (low count, motility, or DNA fragmentation) requires intracytoplasmic sperm injection (ICSI)
• Endometriosis, low AMH, ovulation disorders like PCOS, or unexplained infertility have not responded to 3+ IUI cycles
• A couple needs preimplantation genetic testing (PGT-A) to screen embryos for chromosomal abnormalities
• Same-sex couples or single women are using donor egg, donor sperm, or a gestational carrier
• Recurrent implantation failure or repeated pregnancy loss after other treatments

A typical full IVF cycle in India follows a personalised treatment plan built around your AMH, antral follicle count, BMI, and previous IVF history. Each step in the IVF process is calendar-driven — your fertility specialist hands you an IVF calendar at consultation showing exactly which day each injection, blood test, and ultrasound falls on. At our clinic we always begin with a thorough fertility assessment to make sure IVF is genuinely the right path for you before recommending it.

The Six Canonical Steps Involved in the IVF Process

The IVF process step by step, from cycle Day 1 to pregnancy test, spans roughly four to six weeks. Here is the full sequence followed by every legitimate IVF lab worldwide.

Step 1: Ovarian Stimulation (Day 2 to Day 10–12)

Ovarian stimulation is the controlled hyperstimulation phase where injectable gonadotropin hormones recruit multiple ovarian follicles instead of the single follicle your menstrual cycle normally develops. The goal is to grow 8–15 mature eggs from one ovary cycle.

Standard injection drugs used in the stimulation phase:

• Recombinant FSH (Gonal-F, Puregon) — 150–300 IU per day, subcutaneous, starting Day 2 or Day 3 of the menstrual cycle
• HMG (Menopur) — adds LH activity, often combined with FSH in low-responder protocols
• GnRH antagonist (Cetrotide, Orgalutran) — added around Day 5–6 in the short antagonist protocol to prevent premature ovulation
• GnRH agonist (Lupron) — used instead of antagonist in the long agonist protocol; you start it in the luteal phase of the previous cycle

Long agonist protocol versus short antagonist protocol: the agonist protocol gives tighter cycle control but takes two weeks longer; the antagonist protocol is shorter, gentler on the ovary, and now standard for most IVF patients. Your fertility specialist chooses based on your AMH, age, and previous IVF response. You will give yourself daily injections — most patients find this much easier than expected after the first day or two.

Cost in Hyderabad: ₹60,000–₹1,00,000 for stimulation drugs alone — the single largest line item in your IVF cycle. There are no hidden costs at our clinic; the drug invoice is itemised brand-by-brand on Day 1.

Step 2: Monitoring — Ultrasound and Blood Test (Day 5 to Day 12)

Once injections start, you return to the fertility clinic every two to three days for transvaginal ultrasound and a blood test. The ultrasound counts and measures every follicle on each ovary; the blood test tracks estradiol (E2), which rises in proportion to follicle number and maturity.

Targets your IVF physician watches for:

• 8–15 follicles measuring 16–20 mm
• Estradiol of 200–400 pg/mL per mature follicle
• A uterine lining of 7–14 mm with a trilaminar appearance

If estradiol climbs too fast, your fertility specialist will lower the FSH dose to reduce ovarian hyperstimulation syndrome (OHSS) risk. If follicles grow unevenly, dose may be increased. This is why the IVF process is not “one-size-fits-all” — every 48-hour scan can change the treatment plan.

When the lead follicles reach 18–20 mm, you take the trigger shot — usually 250 mcg of recombinant human chorionic gonadotropin (hCG), or sometimes a GnRH agonist trigger — exactly 34–36 hours before egg retrieval. The hCG molecule mimics the natural LH surge and ripens the eggs to metaphase II maturity. Your clinic will give you a very specific time to take this injection, down to the hour. It is critical to follow this precisely.

Step 3: Egg Retrieval — The Ovum Pick-Up Procedure

Egg retrieval (also called ovum pick-up or OPU) is the only surgical step in the IVF process. It is performed 34–36 hours after the trigger shot, almost always in the morning, under short IV sedation (propofol). The egg retrieval procedure takes 15–20 minutes from anaesthesia in to recovery.

How the egg retrieval procedure works:

1. You lie in the lithotomy position; a transvaginal ultrasound probe is inserted into the vaginal canal
2. A 17-gauge needle is passed under ultrasound guidance through the vaginal wall into each ovary
3. Each follicle is aspirated; the follicular fluid is handed through a window directly to the embryologist
4. The embryologist scans the fluid under microscope and isolates each oocyte (egg)
5. Mature eggs are placed in culture medium inside the incubator

You wake up within 20 minutes, recover for 60–90 minutes, and go home the same day. Mild cramping and light spotting for 24 hours is normal. The straightforward procedure carries a less than 1% risk of bleeding, infection, or ovarian torsion — well within the safety profile reported in PubMed-indexed literature on transvaginal oocyte retrieval (Bennett et al., Hum Reprod 1993; subsequent meta-analyses have confirmed sub-1% adverse-event rates).

Cost in Hyderabad: ₹35,000–₹50,000 for the egg retrieval procedure, including anaesthesia and OT.

Step 4: Sperm Collection and Lab Fertilisation

On the same morning as egg retrieval, your partner provides a fresh semen sample by masturbation in a private collection room at the fertility clinic. The semen is processed by density-gradient centrifugation in the IVF lab to isolate the most motile, morphologically normal sperm. If frozen sperm was previously banked, it is thawed and processed instead.

Two fertilisation process options:

• Conventional IVF — about 50,000–100,000 motile sperm are placed in the dish with each mature egg. The sperm finds the egg, binds the zona pellucida, and fertilises naturally. Best for couples with normal semen parameters.
• Intracytoplasmic sperm injection (ICSI) — the embryologist picks one healthy sperm under 400× magnification and injects it directly into the cytoplasm of each mature egg using a glass micropipette. ICSI is mandatory for severe male factor, prior fertilisation failure, and frozen embryo cycles using thawed sperm. ICSI now accounts for more than 70% of all IVF treatment cycles globally.

If the male partner has azoospermia (zero sperm in ejaculate), sperm is surgically retrieved by TESA, TESE, or micro-TESE from the testicle on the same day.

Twelve to eighteen hours later, the embryologist checks each egg for the two pronuclei that confirm fertilisation. Typically 70–80% of mature eggs fertilise normally — the fertilisation process is then complete and embryo culture begins.

ICSI add-on cost in Hyderabad: ₹40,000–₹60,000 above the conventional IVF base.

Step 5: Embryo Culture — Day 3 versus Day 5 Blastocyst

Fertilised embryos are cultured in a controlled-atmosphere incubator at 37 °C, 6% CO₂, 5% O₂. The IVF laboratory grades each embryo at fixed time points. Modern clinics, including ours, use time-lapse imaging systems that photograph each embryo every few minutes without disturbing them — this helps embryologists select the embryos with the best developmental potential.

• Day 3 (cleavage stage): the embryo has divided to 6–8 cells. Day 3 transfer is offered when fewer embryos are available, or when the lab does not have full blastocyst-culture infrastructure.
• Day 5 (blastocyst stage): the embryo has reached 80–120 cells with a clearly defined inner cell mass and trophectoderm. Day 5 or 6 blastocyst transfer is now standard because only the strongest embryos reach blastocyst stage (natural selection in the dish), Day 5 implantation rates are 50–65% versus 25–35% for Day 3, and PGT-A biopsy can only be safely performed at blastocyst stage.

Day 3 or Day 5? Your IVF team will recommend Day 5 if you have four or more normally fertilised embryos. With only 1–3 embryos, Day 3 transfer avoids the risk of zero embryos reaching blastocyst.

Embryo culture is included in the base IVF cycle fee — no separate line item. Time-lapse incubators (EmbryoScope) are a ₹25,000–₹40,000 add-on at premium IVF treatment centres.

Step 6: Embryo Transfer and the Two-Week Wait

Embryo transfer is the final step in the IVF process and the only one that does not require anaesthesia. The embryo is transferred through a soft catheter passed through the cervix into the uterus under transabdominal ultrasound guidance. The procedure takes five minutes; you walk out of the clinic within an hour. Most couples describe this step as the most hopeful moment of the journey.

Fresh embryo transfer versus frozen embryo transfer:

• Fresh embryo transfer happens five days after egg retrieval, in the same cycle as stimulation
• Frozen embryo transfer (FET) uses a vitrified embryo from a previous IVF cycle, transferred in a later, hormonally-prepared cycle. Frozen embryo transfers are now preferred in most modern IVF clinics because the uterine lining is more receptive when not affected by stimulation hormones, and implantation rates are 5–10% higher

Add-ons offered at this step:

• Assisted hatching — laser thinning of the embryo’s zona pellucida; helpful for women over 37 or frozen embryo transfers (₹15,000–₹25,000)
• Embryo glue — hyaluronan-enriched transfer medium that may improve implant rates by 5–8%
• PGT-A (preimplantation genetic testing for aneuploidy) — biopsy 5–7 trophectoderm cells from each blastocyst, screen for chromosomal abnormalities, transfer only euploid embryos. PGT-A cost: ₹25,000–₹40,000 per embryo tested. Strongly recommended for women over 35 or with recurrent pregnancy loss.

After embryo transfer comes the two-week wait (2WW) — 9 to 14 days following embryo transfer, you take daily luteal-phase progesterone (oral, vaginal, or injection) to support the uterine lining and help the embryo implant. After the transfer, no strict bed rest is required; most doctors recommend taking it easy for 24 to 48 hours and then returning to light normal activities. Avoid heavy exercise, hot baths, and smoking.

The pregnancy test (beta-hCG blood test) is done 9–11 days after your embryo transfer for blastocyst transfers, or 12–14 days after the egg retrieval for Day 3 transfers. A beta-hCG above 50 mIU/mL is a positive result; the level should roughly double every 48 hours through week 6.

Cost in Hyderabad: ₹20,000–₹30,000 for the embryo transfer procedure including ultrasound guidance and medications for the two-week wait.

How Long Is the IVF Process from Day 1 to Pregnancy Test

A full IVF cycle takes approximately:

Phase	Calendar days
Day 1 (menstrual cycle) to start of injection	2–3 days
Ovarian stimulation injection phase	10–12 days
Trigger to egg retrieval	1.5 days
Egg retrieval and fertilisation	1 day
Embryo culture to Day 5 blastocyst	5 days
Fresh embryo transfer to pregnancy test	9–11 days
Total: cycle start to result	28–32 days

If you choose a frozen embryo transfer, add 4–6 weeks for the FET cycle. Your IVF calendar from our office maps every appointment by date.

IVF Success Rates by Age

IVF success rates depend on female age more than any other variable. Per-transfer live birth rates from large registry data (SART, HFEA, ESHRE):

Age	Per-transfer live birth rate (own eggs)
Under 35	45–55%
35–37	38–45%
38–40	28–35%
41–42	15–22%
Over 42	5–10% (donor egg strongly advised)

At our Hyderabad clinic, our overall success rate across patient ages is 85% cumulative, with higher rates for younger patients and those with good ovarian reserve. Cumulative IVF success rates over three full IVF cycles roughly double the single-cycle number — the second and third attempts are where most pregnant-through-IVF outcomes happen.

Full IVF Cycle Cost Breakdown in Hyderabad

Financial planning is an important part of the IVF journey. In Hyderabad, a base IVF cycle typically costs ₹1.5 lakh to ₹2.5 lakh; with ICSI plus PGT-A on three embryos it can rise to ₹3 lakh to ₹3.8 lakh.

Item	Cost (₹)
Pre-cycle workup (blood test, ultrasound, semen analysis)	8,000–15,000
Stimulation drugs (FSH, antagonist, trigger)	60,000–1,00,000
Egg retrieval procedure + anaesthesia	35,000–50,000
IVF lab work + embryo culture	50,000–70,000
ICSI add-on	40,000–60,000
Embryo transfer	20,000–30,000
PGT-A (per embryo)	25,000–40,000
Vitrification + 1-year embryo storage	25,000–35,000
Base IVF cycle, no add-ons	1,50,000–2,50,000
With ICSI + PGT-A on 3 embryos	3,00,000–3,80,000

At our clinic every line item is itemised on Day 1 — no hidden costs after egg retrieval. The base IVF treatment fee includes embryo culture, the first fresh embryo transfer, and follow-up to the pregnancy test. Additional costs may apply for egg freezing, embryo freezing, or donor eggs or sperm. Some patients also explore EMI financing or fertility insurance to manage costs.

Add-On Procedures: When Each Is Actually Needed

Add-on	Recommended when
ICSI	Severe male factor, prior fertilisation failure, frozen sperm, PGT-A cycles
PGT-A	Maternal age 35+, recurrent pregnancy loss, recurrent IVF failure
Assisted hatching	Maternal age 37+, thick zona on prior embryos, FET cycles
Embryo glue	Repeated implantation failure (3+ failed transfers)
Time-lapse imaging	Premium tier — modest 3–5% improvement in embryo selection
ERA (Endometrial Receptivity Analysis)	Recurrent implantation failure to identify your unique implantation window
Endometrial scratch	No longer routinely recommended (2024 ESHRE guideline)

Avoid clinics that bundle every add-on into the base price. Each add-on should be a separate, evidence-based decision — and you should be able to say no to any of them.

Latest Advances in IVF Technology (2026)

IVF technology has come a long way, and several recent advances are improving success rates:

• AI-assisted embryo selection: Artificial intelligence algorithms now help embryologists evaluate embryo quality more objectively, identifying the embryos with the highest implantation potential.
• Time-lapse embryo monitoring: Continuous imaging allows us to observe embryo development without removing them from the incubator, creating a more stable environment.
• Vitrification (ultra-rapid freezing): Modern freezing techniques have dramatically improved frozen embryo survival rates to over 95%, making frozen transfers a reliable option.
• PGT-A genetic screening: Screening embryos for chromosomal abnormalities before transfer reduces miscarriage risk and improves live birth rates.
• ERA (Endometrial Receptivity Analysis): A test that identifies your unique implantation window, ensuring the embryo is transferred at the optimal time.

Preparing for Your IVF Cycle: What You Can Do

While medical science does the heavy lifting, there are meaningful steps you can take to support your IVF journey:

• Nutrition: Focus on a balanced, Mediterranean-style diet rich in fruits, vegetables, whole grains, lean protein, and healthy fats. Folic acid supplementation (at least 400mcg daily) is essential.
• Lifestyle: Reduce or eliminate alcohol, quit smoking, aim for moderate exercise, and prioritise sleep.
• Stress management: While stress alone does not cause infertility, managing it helps you cope better with the emotional demands of treatment. Consider mindfulness, yoga, or talking to a counsellor.
• Supplements: CoQ10, Vitamin D, and DHEA are commonly recommended — but always discuss with your doctor before starting anything.
• For male partners: Avoid excessive heat (hot baths, tight underwear), maintain a healthy weight, and consider an antioxidant supplement after discussing with your specialist.

Frequently Asked Questions

How long is the IVF process from consultation to pregnancy test?

For a fresh embryo cycle: about 6–8 weeks total (2 weeks of workup plus 4 weeks of the cycle of IVF). For a frozen embryo transfer cycle, add 4–6 weeks. A single IVF cycle from the first day of medication to the pregnancy test takes 4 to 6 weeks.

How many eggs do you need for a successful IVF cycle?

Most IVF physicians target 10–15 mature eggs at egg retrieval. From those, expect around 70% to fertilise, around 50% to reach blastocyst stage, and around 50% of blastocysts to be chromosomally normal. So 10 mature eggs typically yield 2–3 transfer-quality embryos.

Is egg retrieval painful?

No. The egg retrieval procedure is performed under IV sedation — you sleep through it. Post-procedure cramping for 12–24 hours is mild and managed with paracetamol. The daily stimulation injections cause only mild discomfort similar to a small pinch, and embryo transfer is painless.

What does it mean if my embryo is transferred on Day 3 instead of Day 5?

Day 3 transfer is recommended when you have only 1–3 fertilised embryos — transferring on Day 3 avoids the risk that no embryos reach blastocyst in the IVF lab. Day 5 or 6 blastocyst transfer is preferred when 4 or more embryos are available, because blastocyst transfers have higher implantation rates and allow PGT-A biopsy.

How many cycles of IVF before success?

Many patients conceive in the first or second cycle. Cumulative IVF success rates peak around three cycles for women under 38 — approximately 65–85% of patients who complete three full IVF cycles achieve a live birth.

Does IVF always result in twins or triplets?

Not necessarily. Modern IVF practice increasingly favours single embryo transfer (SET) to reduce the risks associated with multiple pregnancies. The decision about how many embryos to transfer is made together by you and your doctor based on your age, embryo quality, and history.

Are IVF babies healthy?

Yes. Decades of research involving millions of IVF-born children worldwide shows that IVF babies are as healthy as naturally conceived children. With PGT-A testing, there is actually a reduced risk of certain chromosomal conditions.

Can I work during the IVF process step by step?

Yes for stimulation, monitoring, and the two-week wait. Take 1–2 days off around egg retrieval (sedation recovery) and the day of embryo transfer (rest recommended for 24 hours, though it is not medically mandated).

Your Next Step in the IVF Process

Understanding the IVF process step by step is only the first decision. The next is choosing a fertility specialist who explains every injection, every ultrasound, and every cost up front — and who treats each cycle of IVF as a personalised treatment, not a template.

Dr. Parinaaz Parhar offers a free first consultation at her Hyderabad fertility clinic. You will walk out with: a written treatment plan, a complete IVF calendar, an itemised quote with no hidden costs, and an honest probability of success for your specific case. Book a consultation with Dr. Parinaaz Parhar or call us at +91 97700 00911.

Dr. Parinaaz Parhar is a fertility specialist with 16+ years of experience and Clinical Head at Oasis Fertility, Secunderabad. She has helped over 7,000 patients on their journey to parenthood, with a 5.0★ Google rating from 1,500+ patient reviews.