1. Culture Systems: Stability, Flexibility and Workflow Integration

A robust culture system should allow clinics to maintain uninterrupted environmental control from oocyte retrieval all the way through blastocyst development. Consistent temperature, pH and low-oxygen gas environment remain foundational, but leading labs prioritise now also modularity and reduced dish handling.

When evaluating culture systems, embryologists look for:

• Minimal lid-opening events
• Small independent chambers
• Options for both standard and time-lapse culture
• Compatibility with validated media systems and dish formats

Genea Biomedx’s GERI system, especially when used with GEMS culture medium suite, is a good example of a system built for workflow logic—optimised to reduce variability while keeping handling simple for embryologists.

2. Benchtop Incubators: Why Mini Chambers Are Becoming the Standard

Gone are the days when large box incubators dominated the IVF lab. Today, the preferred IVF incubator is typically a benchtop incubator with small-volume chambers with fast recovery and minimal cross-patient interference.

Key advantages of modern benchtop IVF incubators include:

• Faster temperature and gas recovery
• Reduced contamination risk
• Individualised environments for patients’ embryos
• Improved workflow efficiency

Whether clinics are choosing a compact benchtop system or a more advanced platform, the priority should always be maintaining stability during peak activity times—especially important for high-volume labs.

3. Multi-Room Incubators: Scaling Without Compromise

A multiroom incubator offers a compromise between large box incubators and small benchtop incubators: multiple isolated chambers in one instrument footprint. This design gives embryologists the flexibility to work on individual patients without disturbing others.

Clinics may consider a multi-room system if their lab:

• Handles a high patient volume
• Needs backup chambers for risk mitigation
• Prefers a standardised environment across multiple modules

Systems like the Geri® incubator from Genea Biomedx exemplify this concept—each patient’s embryos have their own completely isolated chamber, reducing disturbance while supporting individualised culture.

5. Matching Equipment to The Laboratory Goals

As embryologists assess their future equipment, they should take a step back and consider their lab’s objectives:

If they want to enhance embryo culture stability
→ Prioritise multi-chamber IVF incubators and low-disturbance culture systems.

If they are scaling up or standardising a larger clinic
→ A modular multiroom incubator allows predictable expansion with low operational variance.

If their goal is to improve selection accuracy and documentation
→ A time-lapse incubator will give deeper real-time insights without compromising culture conditions.

If they want streamlined, integrated workflows
→ Systems like Genea Biomedx’s Geri (for incubation) and GEMS (for media) can reduce variability and simplify day-to-day tasks.

1. Not All Eggs Are Created Equal: Understanding Oocyte Stages 

Human eggs, known as oocytes, develop within fluid-filled sacs in the ovaries called follicles. As follicles grow, the oocytes inside undergo several key developmental stages. By the time of egg retrieval, each oocyte will be at one of the following stages: 

Germinal Vesicle (GV): 
These are immature oocytes, with a visible nucleus. They haven’t completed the necessary steps for fertilisation and are not viable for use in IVF. 

Metaphase I (MI): 
These oocytes are partway through maturation but haven’t completed meiosis. While they show some progress, MI eggs are still not ready to be fertilised. 

Metaphase II (MII): 
This is the gold standard in IVF. MII oocytes have completed the necessary cellular processes and are now ready to be fertilised by sperm. 

Only MII-stage oocytes can be fertilised successfully and go on to develop into viable embryos. That’s why achieving maturity is the key focus for both clinicians and embryologists throughout the IVF cycle. 

3. Egg Retrieval (Ovum Pick-Up)   

Exactly 36 hours after the trigger shot, the egg retrieval (also called ovum pick-up or OPU) is performed. This is a minor surgical procedure done under sedation, typically taking around 15–30 minutes. 

A thin needle is guided through the vaginal wall into each follicle using ultrasound guidance, allowing the clinician to aspirate the fluid and, hopefully, retrieve the oocyte within. 

However, it’s important to remember that not all retrieved oocytes will be mature. That’s where the embryologists step in. 

5. Why Egg Maturity Matters in IVF 

Egg maturity plays a crucial role in determining the outcome of your IVF cycle. Here’s why: 

Only mature (MII) eggs can be fertilised by sperm. GV and MI oocytes are biologically incapable of normal fertilisation. 

Higher maturity rates improve embryo development rates. The more MII eggs retrieved, the greater your chances of producing high-quality embryos. 

Immature eggs may arrest or develop abnormally. Even if immature eggs are injected with sperm, they rarely develop into viable embryos. 

This is why embryologists place such importance on accurately identifying and selecting mature eggs. Each mature egg is a potential step closer to creating an embryo—and ultimately, achieving a pregnancy.