IVF stands for in vitro fertilization. “In vitro” means “in glass” (ie: in the glass lab dish where fertilization happens rather than inside the body). Eggs are collected, combined with sperm in the lab, and a resulting embryo is placed into the uterus, where it can implant and grow into a pregnancy.
Fertility treatments as a whole
IVF isn’t the only option, and for a lot of people it isn’t the first one. Fertility treatment is a range, from barely medical to full lab process. From simplest to more complicated:
- Tracking and timing. In each menstrual cycle, there are a few days when sex can actually lead to pregnancy (ie: the days around ovulation, when an egg is released and can be fertilized). People can track those days with calendar apps or with ovulation predictor kits from the drugstore, and then time sex to match.
- Ovulation medication. Hormone pills or injections can prompt the ovaries to release an egg. Useful when ovulation itself is the problem, which is common with something like PCOS.
- IUI (intrauterine insemination). Sperm is collected, concentrated, and placed directly into the uterus around ovulation, skipping the swim up. Fertilization still happens inside the body. It’s simpler and cheaper than IVF, and often tried first. Sometimes it’s paired with ovulation medication.
- IVF. Eggs are retrieved, combined with sperm in a lab to fertilize, and a resulting embryo is transferred back to the uterus. More involved than the others, with more control over the steps that were going wrong.
- IVF with add-ons. Optional steps and add-ons that happen as part of an IVF cycle, not instead of it, such as ICSI (a single sperm injected straight into an egg), PGT (testing embryos before transfer), or using donor eggs, donor sperm, or a surrogate.
The broader term for all this is ART (assisted reproductive technology). It’s the umbrella for treatments that handle eggs or embryos directly, so IVF and its add-ons fall under ART, while the simpler methods (timing, ovulation meds, IUI) generally sit outside it.
IVF usually comes up when simpler treatments haven’t worked, or when something specific points to it from the start. The rest of this page is about what it actually involves.
What an IVF cycle looks like
One round of IVF (also called a cycle) is a single pass through the stages below, from the start of the stimulation medication to the pregnancy test after a transfer. Exact timing and medications vary by clinic and by person.
1
Testing and planning
Before the cycle begins and planning
Bloodwork, ultrasounds, and a semen analysis give a picture of what’s happening. From these, a doctor designs a medication plan suited to the situation.
2
Ovarian stimulation
About 10–14 days
Daily hormone injections encourage the ovaries to mature several eggs at once, rather than the single egg of a usual cycle. Frequent monitoring tracks how the follicles are growing.
3
The trigger shot
One precisely timed dose
A final injection prompts the eggs to finish maturing. Retrieval is scheduled for roughly a day and a half later.
4
Egg retrieval
A short procedure, ~20–30 min
Under light sedation, the mature eggs are collected from the ovaries using an ultrasound-guided needle. Most people go home the same day.
5
Fertilization in the lab
Embryos develop over 3–6 days
The eggs are combined with sperm — either mixed together, or with a single sperm injected into each egg (ICSI). Successfully fertilized eggs grow into embryos over the following days.
6
Embryo transfer
A quick procedure
A selected embryo is placed into the uterus. This can happen in the same cycle, or — increasingly common — embryos are frozen and transferred in a later cycle.
7
The two-week wait
About 9–14 days
After the transfer comes the wait before a blood test can confirm whether the embryo has implanted.
Not every cycle includes every option, and not every cycle leads to a transfer. A doctor adjusts the plan based on how each stage goes.
A few things worth knowing early
One round can mean more than one transfer. A single round of stimulation and retrieval often makes several embryos. One gets transferred, the rest can be frozen for future transfers, with no repeat retrieval needed. So “a round” and “a transfer” aren’t always the same thing, which matters for both cost and planning.
It often takes more than one try. For some, the first go around with an IVF cycle is enough for a successful pregnancy. But it is also very common for others to try a few times. Sometimes that means another transfer from embryos you’ve already frozen, sometimes a full new round starting back at testing and retrieval.
It’s a lot, all at once. IVF is physically, emotionally, and financially demanding. And often all at the same time. It’s the whole reason we started this website. And each one has its own section here.
Learn More
Sources
- American Society for Reproductive Medicine (ReproductiveFacts.org), “IVF Treatment Journey”
- Society for Assisted Reproductive Technology (SART), “Assisted Reproductive Technologies”
- Mayo Clinic, “In vitro fertilization (IVF)”
- U.S. Centers for Disease Control and Prevention (CDC), “Assisted Reproductive Technology”