Egg Retrieval (Ovum Pick-Up) in Chennai

Egg retrieval, also called ovum pick-up (OPU), is the day your IVF cycle has been building towards. After about two weeks of injections and scans, the eggs your ovaries have grown are collected so they can meet sperm in the lab. Knowing what happens in the procedure room and the embryology lab helps replace anxiety with confidence. This guide walks you through the egg retrieval procedure, from the trigger injection to the first few days of recovery.

If you want the whole IVF journey from the first consultation to the pregnancy test, read IVF step by step first and come back to this page for the retrieval day itself.

What Is the Egg Retrieval Procedure (Ovum Pick-Up)?

Egg retrieval is a minor, ultrasound-guided procedure that collects mature eggs (oocytes) directly from the follicles in your ovaries during an IVF cycle.

Before this day, daily hormone injections stimulate both ovaries to grow several fluid-filled sacs called follicles, each of which may hold an egg. The details of those injections are covered in our guide to the IVF stimulation protocol. The retrieval collects the fluid from these follicles just before the eggs would naturally be released.

Although it is called a surgical procedure, it is minimally invasive. There are no cuts on the abdomen, no stitches and no overnight stay. It is done under short intravenous sedation in a day-care theatre, and most women go home the same day.

The Role of Ovum Pick-Up (OPU) in Your IVF Journey

In a natural cycle, a single follicle ruptures and releases one egg into the fallopian tube. In IVF, ovum pick-up lets your specialist collect several eggs at once under sterile conditions. Because the eggs go straight to the lab, the embryology team can check their maturity right away and fertilise them by conventional IVF or by ICSI, where a single sperm is injected into each egg.

How to Prepare for Egg Retrieval Day: Trigger Shot and Arrival

What you do in the 36 hours before retrieval matters as much as the procedure itself. Follow your clinic's instructions exactly.

The Critical 34–36 Hour Trigger Injection Window

The last step of egg maturation is a single, precisely timed injection called the trigger shot. It contains hCG, a GnRH agonist, or a combination of both.

1. Take the trigger at the exact time your team gives you, usually 34 to 36 hours before your scheduled retrieval.
2. The trigger completes the final maturation of the eggs and loosens them from the follicle wall so they can be collected.
3. Timing is critical. If the trigger is taken too early, more eggs may still be immature at collection. If it is taken too late, some follicles may release their eggs on their own before the retrieval.

If you miss the time or are unsure about the dose, call your clinic immediately rather than guessing.

Morning Instructions: Fasting and Semen Collection

• Do not eat or drink for the period your clinic gives you, usually about 6 hours before the procedure, because sedation needs an empty stomach.
• Wear loose, comfortable clothes and leave jewellery at home. Skip perfume, scented lotion and deodorant, because strong scents are kept away from the embryology lab.
• Your husband or partner gives a fresh semen sample the same morning in a private room, so the lab can prepare the sperm while your eggs are being collected.

If frozen or donor sperm is being used, the lab thaws and prepares it alongside your retrieval.

Step-by-Step: What Happens During the IVF Egg Retrieval Process?

Knowing what to expect in the procedure room helps you stay relaxed on the day.

Anaesthesia and Comfort

An anaesthetist places a small intravenous line in your arm.

• You receive short intravenous sedation with pain relief, so you drift into a light sleep and feel no pain during the collection.
• This is not deep general anaesthesia. You do not need a breathing tube and you breathe on your own throughout.
• Your blood pressure, heart rate and oxygen levels are monitored the whole time.

Many couples ask whether egg retrieval hurts. Because you are sedated, the collection itself is not felt. For an honest look at discomfort across the whole IVF cycle, read is IVF painful?.

Transvaginal Ultrasound Needle Aspiration Explained

Once you are asleep, your fertility specialist uses a transvaginal ultrasound probe fitted with a sterile needle guide.

1. The ultrasound shows each ovary and its follicles on a screen.
2. A thin needle passes along the probe, through the vaginal wall and into a follicle.
3. Gentle suction draws out the follicular fluid, which carries the egg.
4. Each follicle on one ovary is emptied in turn, and then the other ovary is done the same way.

The collection usually takes 15 to 30 minutes. When it is finished, the sedation is stopped and you wake up gently before moving to the recovery area.

What Happens to Your Eggs Right After Retrieval in the Embryology Lab?

The follicular fluid goes to the embryology lab as soon as it is collected.

Grading Egg Maturity: Mature vs. Immature Oocytes

• The embryologist examines the fluid under a warmed microscope to find each egg, which is surrounded by a cloud of supporting cells (the cumulus).
• The eggs are moved into culture dishes with nutrient-rich medium and kept in an incubator at body temperature.
• Before fertilisation, the embryologist checks how mature each egg is. Only mature eggs (called metaphase II or MII) can normally be fertilised.

Not every egg collected will be mature, and that is expected. If you want to support egg health before a cycle, read our guides on how to check and improve egg quality and on supplements for egg quality, and discuss them with your doctor.

Direct Lab Involvement by Your Fertility Specialist

Dr. Rukkayal Fathima (MRCOG, UK; Fellowship in Reproductive Medicine, Kiel University, Germany) works directly with the embryologists in the IVF lab. The doctor who performs your retrieval also follows your eggs into the lab and discusses egg numbers and maturity with the embryology team. She brings over 15 years of clinical experience and more than 3,000 IVF cycles (clinic-reported) to that discussion.

How Many Eggs Can You Expect to Get During Oocyte Retrieval?

This is one of the most common questions, and the honest answer is that it differs from woman to woman. Your doctor can give you a personal estimate from your scans before retrieval day.

Factors That Influence Your Egg Yield: Age and AMH

• Age: Ovarian reserve falls with age, which affects both the number of eggs and their quality.
• AMH and antral follicle count (AFC): A higher AMH and more resting follicles on your baseline scan usually mean more eggs. Our guide to AMH levels and fertility explains what your number means.
• Response to medication: Your stimulation protocol and dose adjustments affect how evenly your follicles grow.

Not every follicle seen on the scan contains an egg, and not every egg will be mature or fertilise. Quality matters more than quantity. A smaller number of good, mature eggs can still lead to healthy embryos and a pregnancy.

Immediate Recovery and Key Warning Signs After Egg Retrieval

After the procedure you rest in the recovery area for 1 to 2 hours while the sedation wears off.

Normal Symptoms vs. OHSS Warning Signs

Your ovaries are still enlarged from stimulation, so some discomfort is normal. Rest and the pain relief your doctor prescribes are usually enough.

Normal in the first 24 to 48 hours:

• Mild pelvic ache or period-like cramps.
• Light spotting or pink-tinged discharge.
• Mild bloating or a feeling of fullness.

Call your clinic straight away if you have:

• Severe or worsening abdominal pain that does not ease with prescribed medication.
• Rapid weight gain (more than 1 kg in 24 hours) with a visibly swollen abdomen.
• Persistent nausea or vomiting, or you cannot keep fluids down.
• Dizziness, fainting or difficulty breathing.
• Very little or no urine over 8 hours.
• Heavy bleeding or a fever.

The first five of these can be signs of ovarian hyperstimulation syndrome (OHSS), where fluid shifts into the abdomen after stimulation. Heavy bleeding and fever need prompt review too. Early review means OHSS can be managed quickly and safely.

For guidance on pelvic rest and when intimacy is safe again, read intercourse after egg retrieval.

What Happens Next: From Fertilisation to Embryo Transfer

Over the next five to six days, the lab watches your embryos develop and keeps you updated.

Fertilisation Updates and Embryo Development

On retrieval day, mature eggs are fertilised by conventional IVF or ICSI.

1. Day 1: The lab tells you how many eggs fertilised normally.
2. Day 3: Embryos are at the cleavage stage, ideally with about 6 to 8 cells.
3. Day 5 or 6: The strongest embryos reach the blastocyst stage, with an inner cell mass (which becomes the baby) and an outer layer (which becomes the placenta). Our guide to embryo grading explains how these embryos are assessed.

Fresh Transfer vs. Frozen Embryo Transfer (FET)

Your specialist decides on the safest timing based on your hormone levels, uterine lining and OHSS risk.

• Fresh transfer: An embryo is transferred 3 to 5 days after retrieval, when hormone levels and the lining are right and OHSS risk is low.
• Frozen embryo transfer (FET): Embryos are vitrified (rapidly frozen) and transferred in a later cycle, either a natural cycle or one prepared with hormones. FET is usually used when genetic testing of embryos (PGT) is planned or when OHSS risk is high.

Compare the two in detail in fresh vs frozen embryo transfer. If you are not having a fresh transfer, our guide to your period after egg retrieval explains when to expect it.

Where Egg Retrieval Is Done at Yaal Fertility in Chennai

Dr. Rukkayal consults at all 7 Yaal Fertility and Women's Centre locations across Chennai, so your consultations and monitoring scans can happen close to home. Egg retrieval itself is done at the Yaal centres with an IVF lab and theatre on site: Kilpauk, Velappanchavadi and Thiruvanmiyur. Having the lab beside the theatre means your eggs reach the embryologists within moments of collection.

If you are preparing for IVF and want to understand your own plan, book a consultation or call +91 75500 06704.