Intrauterine insemination (IUI) is a fertility treatment that places prepared sperm directly into the uterus around ovulation. The IUI begins with monitoring a person’s menstrual cycle through blood tests and ultrasounds to help the care team identify when an egg is likely to be released. On the day of the procedure, a sperm sample is washed and concentrated in a laboratory, and a small flexible catheter places the sample into the uterus. After insemination, fertilization may occur inside the body without further intervention. Here’s more information on the advantages of insemination:
Increasing Your Odds of Conception
During natural conception, sperm must travel through the cervix and uterus before reaching the fallopian tubes, so only a portion of sperm are successful. Intrauterine insemination aims to shorten that travel distance by placing sperm closer to where fertilization takes place. Sperm washing is another part of the IUI process. This laboratory step separates sperm from seminal fluid and concentrates the most active cells into a small volume.
Because the procedure is scheduled around ovulation, sperm are present in the uterus when an egg is expected to be available. IUI is recommended for individuals with unexplained infertility, mild male-factor infertility, or cervical mucus concerns, and it’s also an option for single women and same-sex female couples using donor sperm. A fertility specialist can review your history to determine whether IUI fits your circumstances.
Offering a Simplified Treatment Option
IUI and in vitro fertilization (IVF) are both assisted reproductive approaches, though they differ in several ways. IVF involves multiple distinct stages, where first, patients typically take injectable hormones to stimulate the ovaries to produce several eggs. A physician then retrieves the eggs during a minor surgical procedure, often performed under sedation. The eggs are fertilized in a laboratory, and the resulting embryos are monitored for several days before transfer to the uterus.
IUI does not require extra time for egg retrieval or laboratory fertilization, and the procedure doesn’t require anesthesia. Fertilization takes place inside the body, as it would during natural conception. Because of these differences, IUI involves fewer appointments and less medication than IVF. Many clinics will try IUI as an initial step before discussing IVF options, depending on a patient’s:
- Age
- Diagnosis
- Treatment History
Providing Key Treatment Options
Fertility clinics typically offer several IUI treatment options, each differing in how it manages and monitors ovulation. Natural cycle IUI does not use fertility medication. For this insemination option, the care team tracks the patient’s cycle through ultrasounds, blood work, or ovulation predictor kits. Insemination is timed to the natural release of a single egg. This option may suit people who ovulate regularly and prefer to avoid medication.
Clomiphene citrate IUI uses an oral medication taken for several days early in the ovulation cycle. Clomiphene blocks estrogen receptors in the brain, which prompts the body to release more of the hormones that support egg development. Because of the hormone increase, this treatment option may result in more than one egg maturing.
IUI with letrozole also uses an oral medication, though it works through a different mechanism. Letrozole temporarily lowers estrogen levels, which signals the brain to increase hormone production. Letrozole leaves the body more quickly than clomiphene, and some physicians may choose it for patients with certain conditions, including polycystic ovary syndrome (PCOS). Your fertility specialist can explain which protocol may align with your diagnosis and goals.
Learn More About Intrauterine Insemination
Intrauterine insemination has a less complicated treatment path than IVF for many patients exploring fertility treatment. Its brief procedure, fewer clinic visits, and flexible medication options make it a common starting point for many individuals and couples. To learn about your fertility options, contact a fertility specialist to schedule a consultation today. A fertility clinic can evaluate your medical history, discuss your options, and help you understand your next steps.