What Really Happens to Your Embryos in an IVF Lab?

What happens to your eggs, sperm and embryos once they enter an IVF laboratory?In this episode of Knocked Up, Dr Raelia Lew speaks with senior embryologist Alex about the science, precision and human care behind every stage of embryo development.Alex explains how embryologists care for eggs and embryos from collection through to transfer, freezing and genetic testing. They discuss the strict identification systems used to prevent embryo mix-ups, including double witnessing, barcodes and electronic RFID tracking.The conversation also explores embryo grading, what grades such as 4AA or 5BB can and cannot tell us, and why even a beautiful-looking embryo may not result in pregnancy.Raelia and Alex unpack ICSI, sperm-selection techniques, embryo freezing and warming, and the difference between an embryo’s appearance and its chromosomal health. They also look at how artificial intelligence is helping embryologists assess embryos and identify sperm, without replacing human expertise.It’s a fascinating look behind the laboratory door at the people, technology and safeguards supporting every IVF journey.In this episode:What an embryologist does during IVFHow embryo biopsies are performedHow IVF clinics prevent embryo mix-upsWhat egg and sperm quality can revealHow AI is being used to rank embryosWhat IVF embryo grades actually meanWhether lower-grade embryos can become healthy babiesHow safely embryos survive freezing and warmingHow ICSI works and when it may be recommendedSex selection, ethics and “designer babies”Why a good-quality embryo may fail to implantHow IVF success rates are measuredEpisode chapters:00:38 Meet embryologist Alex 02:09 Training as an embryologist 03:08 How embryo biopsies work 04:01 Preventing embryo mix-ups 06:56 The human side of embryology 09:21 Learning from embryo development 10:04 Egg and sperm-selection techniques 12:20 Artificial intelligence in IVF 15:52 Understanding embryo grading 17:55 Can a poor-grade embryo become a baby? 20:04 Embryo freezing and survival rates 22:19 How ICSI works 25:46 Using AI to identify sperm 27:07 Sex selection and designer babies 28:39 Automation in IVF laboratories 31:33 Understanding IVF success rates 33:25 Why a good-looking embryo may not implantAbout Knocked UpKnocked Up is hosted by CREI fertility specialist Dr Raelia Lew and features honest, evidence-based conversations about fertility, IVF, reproductive health and pregnancy.This episode is sponsored by Women’s Health Melbourne, providing expert fertility assessment, IVF, egg freezing, endometriosis management and personalised preconception care.Learn more or book an appointment at womenshealthmelbourne.com.au.This podcast provides general information and does not replace personalised medical advice. Please speak with a qualified healthcare professional about your circumstances.Resources and supportLearn more about fertility treatment, IVF and egg freezing through:Host: CREI Fertility Specialist, Dr Raelia LewGuest: Alex Davenport Knocked Up Producer: Jess Clark  Follow us on Instagram ⁠⁠@knockeduppodcast ⁠⁠ ⁠⁠@drraelia lew⁠⁠ ⁠⁠@womenshealthmelbourne⁠⁠⁠⁠www.youtube.com/@knockeduppodcast⁠⁠This episode of Knocked Up is brought to you by Women’s Health Melbourne. To book an appointment visit www.womenshealthmelbourne.com.au The information shared in this podcast is general in nature and should not replace personalised medical advice.Subscribe to Knocked Up and leave a review to help more people access informed, compassionate conversations about fertility and women’s health.IVF nurse, IVF nursing, fertility nurse, fertility treatment, IVF treatment Australia, IVF emotional support, two-week wait IVF, embryo transfer pregnancy test, negative pregnancy test IVF, positive pregnancy blood test, HCG levels pregnancy, fertility preservation children, paediatric fertility preservation, egg freezing, embryo banking, donor eggs,