{"id":8622,"date":"2025-12-15T21:16:32","date_gmt":"2025-12-15T21:16:32","guid":{"rendered":"https:\/\/progyny.com\/?p=8622"},"modified":"2025-12-15T22:39:55","modified_gmt":"2025-12-15T22:39:55","slug":"what-is-intrauterine-insemination-iui","status":"publish","type":"post","link":"https:\/\/progyny.com\/education\/what-is-intrauterine-insemination-iui\/","title":{"rendered":"What is intrauterine insemination (IUI)?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\" style=\"font-size:15px\">Updated by the Progyny Editorial Team. Reviewed by the Progyny Clinical Team \u2014 December 2025.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Intrauterine insemination (IUI) is a fertility treatment in which sperm is placed&nbsp;directly&nbsp;in&nbsp;the uterus&nbsp;to&nbsp;help&nbsp;increase the chance of pregnancy. You may have heard it&nbsp;called&nbsp;artificial insemination.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">IUI is timed with your menstrual cycle&nbsp;so that&nbsp;sperm is placed at the time when the ovary releases an egg&nbsp;(ovulation). Sometimes, medicine is used&nbsp;to help&nbsp;mature and release&nbsp;the eggs&nbsp;to improve the chances of pregnancy.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Who might&nbsp;consider&nbsp;IUI?&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">IUI&nbsp;may be recommended&nbsp;for:&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>People with&nbsp;<strong>unexplained infertility<\/strong>&nbsp;(no clear cause found after testing)&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Male infertility<\/strong>&nbsp;(such as mild to moderately decreased sperm count or motility)&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>People using<strong>&nbsp;donor sperm<\/strong>&nbsp;(same-sex couples or single parents)&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Other specific causes of infertility such&nbsp;endometriosis,&nbsp;polycystic ovary syndrome (PCOS),&nbsp;problems with the cervix, problems with ovulation, or other medical reasons&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Your healthcare team will&nbsp;review your medical history and&nbsp;test&nbsp;results to make sure&nbsp;IUI is a&nbsp;good&nbsp;option&nbsp;for you. This may involve&nbsp;blood tests, ultrasounds, and&nbsp;a semen&nbsp;analysis.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How does IUI work?&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">There are&nbsp;2&nbsp;main&nbsp;cycle options with IUI.&nbsp;Your team will walk you through the details,&nbsp;what to expect, and&nbsp;what\u2019s&nbsp;best for you.&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In a\u00a0<strong>natural cycle<\/strong>, the procedure\u00a0is timed based on your body\u2019s ovulation.\u00a0\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>In a&nbsp;<strong>medicated cycle<\/strong>,&nbsp;you\u2019ll&nbsp;take fertility medicine. Starting around day&nbsp;2 or&nbsp;3 of your cycle,&nbsp;you&nbsp;may&nbsp;take&nbsp;oral&nbsp;medicine&nbsp;(such as&nbsp;clomiphene citrate [Clomid] or letrozole [Femara])&nbsp;for 5 to 7 days&nbsp;to help your ovaries mature eggs.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Timing&nbsp;is important&nbsp;<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">With either cycle&nbsp;option,&nbsp;you\u2019ll&nbsp;need to&nbsp;know when&nbsp;you ovulate.&nbsp;Ovulation is&nbsp;often around day 11 or 12, but&nbsp;it can vary. Your doctor may recommend that&nbsp;you&nbsp;track ovulation using:&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An ovulation predictor kit, which\u00a0is a urine test that\u00a0detects\u00a0an\u00a0<strong>LH surge<\/strong>\u00a0(LH is\u00a0a hormone\u00a0that surges\u00a0before an egg is released).\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>An ultrasound that will show images of\u00a0the ovaries and egg growth.\u00a0<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A blood test which will check hormone levels.\u00a0<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">When the egg is mature, you may&nbsp;be given a&nbsp;<strong>trigger shot<\/strong>&nbsp;of&nbsp;human chorionic gonadotropin&nbsp;(hCG). This&nbsp;medicine&nbsp;helps&nbsp;make sure the egg is released&nbsp;at the right time.&nbsp;A trigger shot&nbsp;can be&nbsp;used in&nbsp;both natural and medicated cycles.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The IUI procedure&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A day or two&nbsp;after&nbsp;your&nbsp;LH surge or&nbsp;trigger shot,&nbsp;it&#8217;s&nbsp;time&nbsp;for the IUI procedure.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If&nbsp;using&nbsp;fresh&nbsp;partner sperm,&nbsp;your partner will need to come to the doctor\u2019s office with you to give a semen sample. They&nbsp;may be asked to avoid ejaculating&nbsp;for 1 to 2 days before the procedure.&nbsp;Or sometimes, your provider may recommend intercourse in the days leading up to&nbsp;the&nbsp;IUI.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What happens during an IUI?&nbsp;<\/h3>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li>Semen is&nbsp;prepared&nbsp;using a process called \u201csperm washing\u201d to isolate the highest quality sperm. The prepared sample&nbsp;is&nbsp;placed in&nbsp;a syringe connected to&nbsp;a&nbsp;catheter (thin tube).&nbsp;&nbsp;<\/li>\n<\/ol>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li>You\u2019ll lie on an exam table, similar to a&nbsp;Pap smear.&nbsp; A speculum is placed in the&nbsp;vagina&nbsp;and the&nbsp;catheter is&nbsp;inserted through the cervix into&nbsp;the&nbsp;uterus&nbsp;to release the sperm close to the egg. This&nbsp;usually&nbsp;only takes a few minutes, though it may take longer for some people (like if&nbsp;you\u2019ve&nbsp;had a C-section or abdominal surgery like&nbsp;a myomectomy).&nbsp;<\/li>\n<\/ol>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li>You\u2019ll&nbsp;rest&nbsp;briefly,&nbsp;and&nbsp;then you can go about your day. You may have light spotting or cramping&nbsp;for a day or two.&nbsp;Call&nbsp;your&nbsp;doctor if you have heavy bleeding, pain, or fever.&nbsp;<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Pregnancy results, success rates, and risks&nbsp;&nbsp;<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You can take an at-home pregnancy&nbsp;test&nbsp;about&nbsp;2 weeks&nbsp;after the IUI.&nbsp;Testing too early can give inaccurate results.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Success rates vary based on your age and health&nbsp;history.&nbsp;&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>For&nbsp;people under 35,&nbsp;the success rate&nbsp;is&nbsp;about&nbsp;10%&nbsp;to&nbsp;15%&nbsp;per cycle.&nbsp;&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>For&nbsp;people over 40, the rate is&nbsp;lower, about 1% to 4% per cycle.&nbsp;&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">With medicated IUI, there is a risk of&nbsp;<strong>multiple pregnancy&nbsp;<\/strong>(twins or more).&nbsp;<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>With oral medicine (Clomid or letrozole), the risk of twins is about 5% to 10%.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li>With injectable medicine (gonadotropins), the risk of multiples is 20% to 30%. This medicine&nbsp;is not recommended by expert guidelines&nbsp;for most people.&nbsp;<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Talk to your healthcare team to&nbsp;see&nbsp;if IUI is a good&nbsp;option&nbsp;for you and your family-building goals. Your Progyny Care Advocate is here to support you&nbsp;every step of the way.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Disclaimer:<\/strong>&nbsp;The information provided by Progyny is for educational purposes only and is not medical advice. Always consult a qualified healthcare provider for medical guidance.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>IUI entails the insemination of sperm through the cervix directly into the uterus, with the idea that having an increased concentration of sperm in the upper reproductive tract increases your chances for pregnancy.<\/p>\n","protected":false},"author":18,"featured_media":22836,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[244,230],"tags":[228,261],"class_list":["post-8622","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fertility-101","category-education","tag-article","tag-iui"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What is intrauterine insemination (IUI)? 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