Author
MBBS, MD (OBG), NUH Certified (Singapore), Fellowship in Infertility
Senior Consultant - Obstetrics, Gynaecology & Reproductive Medicine, Scientific Director – IVF
An IVF cycle is a carefully planned medical process designed to help individuals and couples achieve pregnancy when natural conception is complex. Approximately 5% of couples with infertility will try IVF, and more than 8 million babies have been born from IVF since 1978.
Advances in reproductive medicine have made IVF treatment more personalised. The treatment now offers different approaches based on age, medical history and fertility challenges personal to the patient. Understanding the structure and steps of IVF treatment cycles helps patients know what to expect and choose the most suitable option.
This article explains the stages of an IVF cycle, outlines who IVF may be right for and compares different approaches.
Is IVF the Right Choice for You?
Doctors may recommend IVF in these cases:
- Other fertility treatments have not been successful.
- Patients have conditions affecting fertility or conception, like damaged or blocked tubes and severe male factor infertility.
- Reproductive conditions such as Grade IV Endometriosis and Uterine Fibroids.
- For same-sex couples and individuals choosing parenthood independently.
A fertility specialist evaluates medical history, hormone levels, and reproductive anatomy to determine whether IVF is appropriate and which type of IVF cycle is most suitable.
What is the Standard IVF Cycle Process?
The IVF cycle begins with a detailed consultation. Technicians perform blood tests, ultrasound scans and semen analysis, which are then used to assess fertility and plan the treatment. This step ensures that the standard IVF cycle is tailored to the patient’s needs.
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Ovarian Stimulation
During ovarian stimulation, hormone medications are prescribed to encourage the ovaries to produce multiple eggs. This phase is a defining feature of a conventional IVF cycle and allows doctors to collect more eggs in a single cycle.
This is a minor procedure performed under sedation. During the procedure, doctors collect mature eggs from the ovaries using ultrasound guidance. The number of eggs retrieved can influence overall success rates.
A semen sample needs to be collected at the doctor’s office or clinic the morning of egg retrieval. The collected sperm can also be frozen. The sperm are separated from the semen fluid in the lab. In some cases, surgical sperm retrieval may be needed for male factor infertility.
This stage takes place in a controlled laboratory and uses two standard methods to fertilize the collected eggs with sperm:
- Conventional insemination: Using this approach, mature eggs and healthy sperm are combined and stored in an incubator, a controlled environment.
- ICSI: This stands for intracytoplasmic sperm injection. In this method, each mature egg is fertilised by a single healthy sperm. When there is a problem with the quantity or quality of semen, ICSI is frequently used. Alternatively, it could be used if previous IVF cycles failed.
In some cases, doctors will recommend other procedures before embryos are placed in the uterus, such as assisted hatching.
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Embryo Development and Transfer
Embryos are monitored for several days, often until the blastocyst stage. One or more embryos are then transferred into the uterus, depending on medical guidance and patient preference.
At this stage, preimplantation genetic testing can also be carried out. Samples from the embryo are examined for certain genetic disorders or the proper number of chromosomes. Embryos without damaged genes or chromosomes can be transplanted into the uterus.
The likelihood that a parent may pass on a genetic issue can be decreased by preimplantation genetic testing.
After about two weeks from the embryo transfer, a blood test called Beta Human Chorionic Gonadotropin can help you confirm whether implantation has occurred and pregnancy has begun.
What is Conventional, Natural and Mini IVF?
Conventional IVF is the most widely recognised form of IVF. In this process, eggs are retrieved from the ovaries and fertilised with partner or donor sperm in a laboratory before the embryos are transferred to the uterus. This approach is commonly recommended for individuals with damaged or blocked fallopian tubes, highly irregular menstrual cycles, or significant male factor infertility. Conventional IVF is also widely used by same-sex couples and intentional single parents.
Mini IVF follows the same fundamental steps as conventional IVF but uses significantly lower doses of fertility medications. As a result, fewer eggs are retrieved, leading to fewer side effects and lower treatment costs. This approach reduces the risk of ovarian hyperstimulation syndrome (OHSS), a potential complication of high-dose hormone stimulation. For this reason, women with polycystic ovary syndrome (PCOS) may respond better to mini IVF.
Natural IVF is performed without ovarian stimulation medications. Instead, a single naturally matured egg is retrieved, fertilised in the laboratory and transferred to the uterus. Patients may still be advised to use supplements or progesterone for luteal phase support. A natural IVF cycle helps patients avoid side effects. These can include bloating, mood shifts and breast tenderness. However, because only one egg is retrieved, multiple cycles may be required to achieve pregnancy. Natural IVF is often chosen by individuals with hormone-sensitive conditions, a family history of hormone-related cancers, or those who prefer a low-intervention approach.
What to Expect After the Procedure?
After embryo transfer, patients may be advised to rest briefly and continue progesterone support. Mild cramping or spotting can occur and is usually normal. Emotional support during this waiting period is essential, as stress and anxiety are common. Lifestyle guidance, follow-up appointments, and pregnancy testing form part of post-procedure care across all IVF treatment cycles.
Conclusion
An IVF cycle is a structured, evidence based approach to achieving pregnancy. Whether choosing a standard IVF cycle or an alternative approach, understanding each stage empowers patients to make informed decisions. At Motherhood Fertility & IVF, personalised care and medical guidance support patients throughout their fertility journey, helping them navigate diverse fertility challenges with greater clarity and confidence.