Frozen embryo transfer (FET): natural vs medicated cycles

What FET is trying to achieve A frozen embryo transfer is not simply a technical placement of an embryo into the uterus. The central biological goal is synchrony: the embryo’s developmental stage must match the receptivity of the endometrium. In a typical transfer, a day-5 blastocyst is placed when the uterine lining has had the […]

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PGT genetic testing: uses, benefits, and risks

What is PGT genetic testing? Preimplantation genetic testing is an embryo testing strategy used during IVF. Eggs are retrieved after ovarian stimulation, fertilized in the laboratory, and cultured for several days, often to the blastocyst stage. A small number of cells is then biopsied, usually from the trophectoderm, the cell layer that contributes to the […]

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IUI success rates and factors affecting outcomes vs natural conception

What IUI changes compared with natural conception In natural conception, sperm are deposited in the vagina during intercourse and must pass through cervical mucus, enter the uterus, reach the fallopian tube, and encounter an ovulated egg. This is biologically efficient for many couples, but it relies on good timing, adequate sperm number and motility, receptive […]

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ICSI: when it is used and how it compares to traditional IVF

What ICSI means within an IVF cycle ICSI is an assisted fertilization technique performed after ovarian stimulation and egg retrieval. The early parts of the treatment are generally the same as in a standard IVF cycle: medications stimulate the ovaries, eggs are retrieved with a needle-guided procedure, and sperm is collected or retrieved. The main […]

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Fresh vs frozen embryo transfer and single vs multiple embryos

What happens in fresh and frozen embryo transfer In a fresh embryo transfer, an embryo is transferred into the uterus a few days after egg retrieval, usually at the cleavage stage or blastocyst stage. This means the transfer takes place in the same cycle in which the ovaries were stimulated with fertility medications. For some […]

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Egg retrieval, fertilization, and embryo transfer in IVF

Where egg retrieval fits in an IVF cycle Egg retrieval occurs after controlled ovarian stimulation, when injectable medications have encouraged multiple follicles to grow. Monitoring with transvaginal ultrasound and blood tests helps the fertility team estimate follicle size, estradiol levels, and the timing of final oocyte maturation. When the lead follicles appear ready, a trigger […]

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IVF success rates, factors, and outcomes by age

What IVF success rate really means IVF success can be described in several ways, and the definition matters. A cycle may be reported by egg retrieval, embryo transfer, clinical pregnancy, ongoing pregnancy, or live birth. For most patients, the most meaningful outcome is live birth per initiated cycle or per embryo transfer. A positive pregnancy […]

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In vitro fertilization (IVF): how it works and stages of a cycle

What IVF is and why it is used IVF stands for in vitro fertilization, meaning fertilization occurs outside the body, in a laboratory environment. Eggs are retrieved from the ovaries and combined with sperm to create embryos. One embryo, or sometimes more depending on medical guidance and regulations, is then transferred into the uterus with […]

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Intrauterine insemination (IUI): procedure and when it is recommended

What intrauterine insemination is Intrauterine insemination is a form of assisted conception in which sperm is prepared in a laboratory and then inserted into the uterine cavity using a fine catheter. Unlike intercourse or intracervical insemination, IUI bypasses the vagina and cervix. This can be useful when cervical mucus, timing, sperm motility, donor sperm logistics, […]

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Gonadotropin injections: how they work and risks of ovarian stimulation

What are gonadotropin injections? Gonadotropins are hormones that normally come from the pituitary gland and regulate ovarian function. The two central hormones are follicle-stimulating hormone, or FSH, and luteinizing hormone, or LH. In a natural menstrual cycle, FSH supports early follicle recruitment and growth, while LH contributes to steroid hormone production and, later, the ovulatory […]

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