As discussed above, there are a variety of other reasons why you might experience a higher hCG reading. An above-normal level can confirm pregnancy. Doctors caring for women taking hCG shots to improve their chances of conception or as part of the intrauterine insemination (IUI) or in vitro fertilization (IVF) process need to carefully time a beta-hCG test to ensure that the medication has cleared the body and will not affect test results. Age, type and duration of infertility, body mass index (BMI) and number of fertilized oocytes did not affect these calculations. If youd be up for sharing, please fill out this quick form. Another reason for high levels of hCG can be the beginning of an ectopic pregnancywhere the embryo grows outside the uterus, i.e., in the fallopian tube. A study of 177 IVF cycles showed that pregnancies with a beta hCG concentration <85 mIU/mL at Day 13 had an 89% risk of having a first trimester miscarriage, and pregnancies with -hCG >386 mU/mL had a 91% chance of a live birth. In this guide, IVF warrior and NatalistFounder Halle Tecco walks through the IVF funnel and the process from egg retrieval to bringing a baby home. Normally, you do your first pregnancy test (HCG blood test) 14 days after embryo transfer. You can never predict until that first ultrasound! Predictive value of serum -human chorionic gonadotropin for early pregnancy outcomes. Dont be afraid to ask questions, like what are the chances an embryo of this quality will implant? These are your potential children, and you should have as much information as you want! Careers. An hCG level that is 30%-50% higher than a standard singleton pregnancy could mean a twin pregnancy. While youre at it, check out our expecting twin classes and Twiniversity shop! my first pregnancywith a singleton was 214 at 10dp5dt and with my current twin pregnancy was 1679 at 12dp5dt. Keywords: It is important to pay close attention to the changes in hCG levels at the beginning of the pregnancy because failed pregnancies often have a longer doubling time early on. 2010-2023 Parenting.FirstCry.com. Every funnel is different, and depends on so many factors including the reason for needing IVF, the quality of the clinic, and sheer luck. Beta hcg levels after ivf. Epub 2019 Nov 22. DOI: Human Chorionic Gonadotropin (hCG) Levels and Miscarriage: What You Need to Know, Seeing Double: How to Increase Your Chances of Having Twins, Why Twins Dont Have Identical Fingerprints, What Are the Symptoms of Hyperovulation?, Pregnancy Friendly Recipe: Creamy White Chicken Chili with Greek Yogurt, What You Should Know About Consuming Turmeric During Pregnancy, Pregnancy-Friendly Recipe: Herby Gruyre Frittata with Asparagus and Sweet Potatoes, The Best Stretch Mark Creams and Belly Oils for Pregnancy in 2023. Except for the pinching sensation of the needle during the blood test, there is no other pain involved. Federal government websites often end in .gov or .mil. During this time, your fertility team may recommend that you eat and do other things as if you were pregnant to encourage implantation and growth of the embryo. I am forever indebted to the doctors and scientists who have enabled me to become a parent through this incredible process. When this happens, the specialist may recommend another test after two days and yet another after another two days. Or perhaps youve come across it in your own research. Low levels of hCG. The higher your levels of hCG are initially, the higher they will be throughout your entire pregnancy. All biochemical pregnancies were found at HCG levels . Use of this site is subject to our terms of use and privacy policy. In such scenarios, the results from an ultrasound after 5 6 weeks of gestation are more reliable compared to numbers derived from quantitative hCG test results. To identify and later diagnose any abnormality such as ectopic pregnancy, where the uterus develops in the fallopian tube. At ELITE IVF, our compassionate and experienced team is ready to help you achieve your baby dreams. Age: 33Reason for IVF: unexplained infertilityMature eggs retrieved: 14Fertilized: 13Day 5: 8Genetically normal: 4Transfers: 4 (1 failed transfer, 2 miscarriages)Live Births: 1, Age: 36Reason for IVF: unexplained infertilityMature eggs retrieved: 14Fertilized: 14Day 5: 9Genetically normal: 3Transfers: 3 (1 failed transfer, 2 miscarriages)Live Births: 0. Hi All! Low hCG levels mean that hCG is not being produced in high quantity by the body, which could be the result of testing very early in the pregnancy when the levels are too low. Methods A retrospective study was . According to RMA, the greatest attrition rate comes from Day 3 to Day 5-6. Typically, within a few days, the hCG level will rise much higher. Rachel uses her own experiences with infertility to write compassionate, practical, and supportive articles. Get it together! (2012). A low level of hCG may mean that ovulation occurred later than expected, if the HCG level is rising (doubling) adequately. Note: Caution must be exercised if hCG levels are low as it can be a sign of a miscarriage, a blighted ovum or an ectopic pregnancy. Group Owners uphold the core values of the brand by reporting content that violates the community guidelines. So, what does this hormone do in the body? This is known as a complete molar pregnancy. And hang in there until you can get that ultrasound done and know for sure if youre having twins! I'm happy with whatever number of babies we get, but I'm hoping for two as well! DOI: Korevaar TIM, et al. One thing I wish I had known while undergoing IVF is that the beta hCG level is predictive of a live birth. If you see your hCG results on a lab report before you have the opportunity to speak about them with your doctor, try not to jump to your own conclusions. Both my pregnancies had similar betas - the only thing that will tell is your US. The implantation rate is the proportion of transferred embryos that implant in the uterine lining and are confirmed with a fetal heartbeat (pregnancy ultrasound). hCG is a useful marker to estimate the gestational age of your pregnancy and to help you determine how far along you are in weeks. If your doctor notices that hCG levels are not following expected patterns, they may request additional blood draws every few days in order to get a better idea of how the levels are changing. 2013 Feb;26(2):107-19. doi: 10.1016/j.rbmo.2012.11.008. A woman who is not pregnant will likely have a baseline hCG level of less than 5 MIU/ml. 25 mIU/ml in the first blood draw, and two days later 50 mIU/ml). I knowI would not be a mother today without IVF. Reference ranges and determinants of total hCG levels during pregnancy: the Generation R Study. The number of embryos that are genetically normal is completely dependent on the age and genetic material of the egg and sperm. A newer study conducted in 2017 of 468 transfer cycles in one university clinic in the US found that 59% of Day-5 single-embryo transfers resulted in a pregnancy, but only 51.7% resulted in a live birth. Healthline Media does not provide medical advice, diagnosis, or treatment. Every 48 to 72 hours, throughout the first four weeks of a viable pregnancy, hCG levels typically double. How Effective is Letrozole for Ovulation Induction? This is good news, self! Increased hCG levels can be an indicator of a pregnancy that includes twins, but its not conclusive evidence. Sign-up for our mailing list and get a FREE printable! The level of this hormone may vary from woman to woman or across pregnancies. (It could just mean that your pregnancy dates have been miscalculated.). Maybe youve heard your fertility team mention hCG more than a few times. Pregnancy tests performed either too early in the pregnancy or during the latter half of the day you plan on taking the test can produce false negative pregnancy results. Usually, if hCG levels are high or low, your team will check back in 48 to 72 hours to get a better idea as to what is going on. On the other hand, a frozen embryo transfer doesnt involve these trigger shots, which means elevated hCG levels are often a good indicator that pregnancy is occurring. While this isnt normal, it is possible. Barnhart KT, Guo W, Cary MS, et al. According to one 2012 report in the journal Fertility and Sterility, several studies have shown that women pregnant with multiples had higher hCG base level counts, but demonstrated similar doubling patterns to women pregnant with single babies. These include fetal loss, preeclampsia, preterm delivery, and chromosomal abnormalities. The hormone hCG (human chorionic gonadotropin) is a glycoprotein released by the embryo after implantation in the maternal uterus. The same goes for the qualitative hCG blood test. If you click on an affiliate link and decide to buy a product, Twiniversitygets a percentage of the sale, at no cost to you. When it comes to hCG, the most important part is the hCG increase rate as opposed to the absolute number involved in hCG levels. Beta-hCG (-hCG) is a test that measures the amount of human chorionic gonadotropin (hCG) in the blood. My first beta after 9 days after a 5 day FET of one blastocyst was 134 and today (12dpt) was 606. Many practitioners use transvaginal ultrasound at pregnancy confirmation visits to actually see visible evidence of the pregnancy (the gestational sac) instead. 2022 Oct;39(10):2355-2364. doi: 10.1007/s10815-022-02606-w. Epub 2022 Sep 8. There are a few embryo grading systems, but most can be bucketed into good, fair, and poor.. Methods: Retrospective study of IVF clinical pregnancies diagnosed at 6 weeks. This could indicate that the baby may have Down syndrome. Like high hCG levels, low hCG levels may indicate a variety of things, and thus, its important to not jump to conclusions too quickly. They will also look at antral follicle count, which is done via an invasive ultrasound that looks at the follicles in the ovary containing an egg (pro tip: you can BYOL. How Do hCG Levels Differ Between Fresh and Frozen Embryo Transfers? 9,000-210,000. Retrospective study of IVF clinical pregnancies diagnosed at 6 weeks. The only way to confirm that youre having twins is to have an ultrasound, as early as 6 weeks of pregnancy. ty startingajourneyi guess i'll only know at the 10 week u/s or can they tell at the viability u/s which is 2 weeks after the + beta?!?! Our website is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Choose from the Twins Daily Log, Twins Registry List, or Potty Training Twins Chart. There's conflicting information out there so we look. According to several studies, women pregnant with twins may have a higher level of hCG baseline levels compared to the normal level of hCG in a singleton pregnancy. (2018)First trimester -hCG and estradiol levels in singleton and twin pregnancies after assisted reproduction. During this test, hCG levels are measured in milli-international units per milliliter (mIU/ml). Overall, hCG is a very important hormone during the first trimester of pregnancy, ensuring the health of the embryo until the placenta is formed. This product is not intended to diagnose, treat, cure, or prevent any disease.Free Standard Shipping is valid on all US orders of $35 or more; free standard shipping is also valid on all recurring subscription orders and multi-packs, bundles, and duos. How Long Until hCG Falls to Zero After Miscarriage? Join the online communities. HCG levels see a lot of variation in pregnancies and can be an important determinant in recognising a twin pregnancy. Only 30-50% of embryos growing on Day 3 make it to the Blastocyst stage. Copyright 2009-2023 Twiniversity. If youre pregnant, but are experiencing lower than expected hCG levels, it may be a sign of: If youre pregnant, but have higher than expected hCG levels, indeed you may be carrying multiples! This level is important to doctors because they will use this to determine how your pregnancy is coming along, based on the concept of doubling time the process of the hCG levels increasing during early pregnancy. Beta-hCG tests measure the amount of human chorionic gonadotropin in the blood. assisted reproduction; pregnancy outcome; twins; vanishing twins; -hCG. HCG isn't a good indication of twins - there are many on here who had super high levels, and many with low levels. hCG levels chart in weeks from DPO (days past ovulation): 1 week DPO: 5 - 50 mIU/ml 2 weeks DPO: 5 - 426 mIU/ml 3 weeks DPO: 18 - 7,340 mIU/ml 4 weeks DPO: 1,080 - 56,500 mIU/ml 5 - 6 weeks DPO: 7, 650 - 229,000 mIU/ml 7 - 10 weeks DPO: 25,700 - 288,000 mIU/ml 11 - 14 weeks DPO: 13,300 - 254,000 mIU/ml 15 - 22 weeks DPO: 4,060 - 165,400 mIU/ml However, in women carrying multiples, this number may be much higher. Aside from this, the beta-hCG test may also be used during evaluations of fertility treatments (a synthetic form of the hormone is sometimes used to help follicles mature and trigger ovulation), as well as when there are concerns that something may be wrong with a pregnancy. It was 1477, so pretty close to 1500. Today, that number is around 30%. Website design by BluErth, The hCG Levels That Could Mean Youre Having Twins. After our last try, we got pregnant! document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Maybe youve heard your fertility team mention hCG more than a few times. What Is HCG (Human Chorionic Gonadotropin)? I wanted to share patient data from my own experience, as well as gathered from a few friends so you could visualize the patient experience. C.S. Just wondering what the adverage first HcG levels are for twins? 48hrs later I was over 3500. At the same time, this can happen during completely normal pregnancies. A molar pregnancy can also occur where the placenta overdevelops into an abnormal mass of cells, leading to a mole. I just had my hcg checked Thursday at 14 dpFET and it was 482.65. What Is a Blood Pregnancy Test and How Does It Work? Helping mothers, protecting Mother Earth. HCG is often injected in the system for women struggling with infertility to increase their levels of progesterone and increase their chances of pregnancy. In addition to genetic testing, there is a strong correlation between blastocyst morphology and implantation. If your hCG levels are rising but not doubling, your fertility team may become concerned about risks of miscarrying or other risks with pregnancy. A beta-hCG test cannot always pinpoint the precise gestational age. In IVF, the fertilized egg turns into an embryo, which divides and multiplies its cells in the lab over this time. The beta-hCG test is also used when there are concerns about pregnancy complications, including miscarriage. The most sensitive, accurate and reliable pregnancy test is a blood test for the presence of beta HCG , often just called "beta". A good friend transferred 2 embryos and her levels were only in the 500s after 14 days. Generally, hCG maintains progesterone levels during the beginning of pregnancy, which supports healthy uterine and fetal growth. You also acknowledge that owing to the limited nature of communication possible on High hCG levels may simply mean that you are further along in your pregnancy than initially thought. Preorder today and get 10% off with code HYDRATE at checkout. Find advice, support and good company (and some stuff just for fun). The beta-hCG test may be done to confirm pregnancy at an early prenatal doctor's visit (as a follow-up to a positive at-home or in-office urine test). These are done at least 2-4 days apart. Beta-hCG (-hCG) is a test that measures the amount of human chorionic gonadotropin (hCG) in the blood. We did two rounds of IUIs and two rounds of IVF. 940-60,000. As long as you have a positive blood test and your progesterone levels are good then it's a good sign your preggo. October 8, 2020. An ultrasound examination can be paired with the hCG levels to determine the accuracy of the progress of the pregnancy. After this, the hCG levels should grow more slowly doubling approximately every 96 hours around the 6-week point. What to Expect has thousands of open discussions happening each day. Guideline to hCG levels during pregnancy: hCG levels in weeks from LMP (gestational age)* : 3 weeks LMP: 5 - 50 mIU/ml Visit the Ultimate Twin Pregnancy Guide to find all the top articles and resources to get you ready for twins. Rachel Gurevich is a fertility advocate, author, and recipient of The Hope Award for Achievement, from Resolve: The National Infertility Association. These two weeks are also very important since during a fresh embryo transfer hCG trigger shots are administered during the stimulation phase to help encourage the maturation of as many eggs as possible. The test will become positive 7 - 10 days after conception and by the time of the first missed period levels frequently exceed 100 IU/L. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. The site is secure. Doctors would ask for repeated blood tests to analyse the change in hCG levels. HCG level after embryo transfer as a prognostic indicator of pregnancy finished with delivery The measured hCG values are considerably different depending on the pregnancy result, which is why this value is considered a quality predictive factor of the pregnancy result. Other reasons you may have a higher than expected hCG levels: You may not have put much thought into hCG if youve never been pregnant before or taken fertility treatments. This test measures your hCG levels in your blood. The fertilization process takes place overnight after the insemination of the eggs with sperm.Generally, 70 to 80 percent of the eggs retrieved will fertilize. Do you feel like youre eating for three instead of just two? 2023 Dotdash Media, Inc. All rights reserved, Verywell Family uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Early on in pregnancy, the rate of increase is more telling than the actual quantity of the hormone in the blood. Unfortunately yes. Embryos that survive to this stage of development have a higher implantation potential once transferred into the uterine cavity. Twin pregnancies with a concentration <207 mIU/mL had only a 33% chance of delivering twins and a 55% risk of having a vanishing twin; whereas a level >768 mIU/mL was associated with a 81% chance of live twin birth and a low risk (19%) of having a vanishing twin. That being said, there are factors that play into a persons chances of success, including: Read How to Find the Best Fertility Clinic. document.getElementById( "ak_js_2" ).setAttribute( "value", ( new Date() ).getTime() ); Speak with a fertility specialist at ELITE IVF today! Wed love to add your data to this list! Beta hCG testing can also be used to determine the age of a fetus. (function($) {window.fnames = new Array(); window.ftypes = new Array();fnames[0]='EMAIL';ftypes[0]='email';fnames[3]='MMERGE3';ftypes[3]='date';fnames[1]='MMERGE4';ftypes[1]='dropdown';}(jQuery));var $mcj = jQuery.noConflict(true); Some Twiniversityposts contain affiliate links. There are many steps in between, and anyone starting the long, difficult, and expensive process of IVF deserves a good understanding of their chances of having a baby. Your ovarian reserve is determined through baseline hormone testing at the beginning of your menstrual cycle. Both qualitative and quantitative tests can be performed. In these situations, repeat tests may be performed every two to three days to evaluate how quickly hCG levels are rising. Yet, they tend to decrease after the three month mark. What should you know about it in relation to IVF? Research shows that theres a strong association between the number of eggs retrieved at the egg retrieval and live birth. Your healthcare provider is there to share the facts and reassure you when youre concerned. In a non-pregnant woman, they are less than 10 mIU/ml. Mine was 286 and the nurse said it was "high". Stretch marks are easier to prevent than erase. The CDC has an IVF Success Estimator, which can give you an estimate of your chance of having a live birth by comparing your data to people with similar characteristics. 29-41. They said I could do an ultrasound late next week. Verywell Family's content is for informational and educational purposes only. hCG typically reaches 90,000-100,000 mIU/mL for a singleton pregnancy. Contact us today to learn more. I transferred 3 embryos on day 3, so.. that would make it 11 days post transfer I guess. Nwabuobi C, Arlier S, Schatz F, Guzeloglu-Kayisli O, Lockwood CJ, Kayisli UA. hCG levels depend on various factors, including fresh versus frozen embryo transfer, day 3 versus day 5 transfers, when the test is performed, and more. Have questions about your order or products? Read the instructions of your test kit thoroughly to understand how it works. You won't really know until your ultrasound. If hCG levels do not follow this pattern, it may indicate preterm delivery, fetal loss, preeclampsia, and chromosomal abnormalities. The initial rise in the hormone levels between these two tests may be slow. However, fresh embryo transfers may involve elevated levels of hCG due to the trigger shots used during the stimulation phase. The morphology of an embryo is the shape or appearance of cells in the embryo. A pregnancy test after IVF will assess your hCG levels, since this is the only time the body produces this hormone. Note that once you confirm, this action cannot be undone. HCG blood test-quantitative. Do High Levels of HCG Mean That You Will Have Twins? Reference ranges and determinants of total hCG levels during pregnancy: The generation R study. The purpose of hCG is to keep progesterone levels in balance until the placenta is developed enough to produce its own progesterone. Had to wait until my ultrasound to confirm it was twins. Other benefits of pregenetic testing include increased implantation rates, decreased miscarriage rates, and shortened time to get pregnant. One observational study of 1,766 single embryo transfers showed that: Most clinics will provide pictures of the embryo, as well as its grading. use of this site indicates your agreement to be bound by the Terms of Use. HCG takes 72 96 hours to develop if it is valued at 1200 6000 mIU/ml. My husband and I have been going to a fertility clinic for two years. Ive learned that IVF is part-science, part-art, and lots of luck. One study from 2003 found that women who underwent IVF miscarried almost 22% of the time. Keep in mind that high or low hCG levels will be monitored by your fertility team to determine exactly what is happening. This discussion is archived and locked for posting. You may be wondering what hCG even is let alone how it could be proof that someones having twins. Your fertility specialist or doctor should also be able to tell you your chances given your medical history, test results, and their experience with similar patients. Methods: Patients undergoing in vitro fertilization (IVF) and ET were monitored by serum quantitative hCG levels 14 days after ET. I remember trying to hyper analyze symptoms etc but my twin pregnancy resulted in zero morning sickness or any other early sign of pregnancy unlike being with my singleton that passed. To assess the predictive value for clinical pregnancy outcome of -hCG level at 13 d after embryo transfer. Differences in serum human chorionic gonadotropin gise in early pregnancy by race and value at presentation. In typical IVF cases, the beta hCG test is done at least twice to confirm a pregnancy. Your Congrats on the positive! hCG can be detected in the bloodstream about 11 days after conception, with a level of 6 40 mIU/ml hCG. Please whitelist our site to get all the best deals and offers from our partners. Brady PC, Correia KF, Missmer SA, Hornstein MD, Barton SE. At this point, if the embryo has implanted, you will also get a positive urine pregnancy test. Its normally produced in the placenta after the egg (or eggs) has been fertilized and traveled to the uterus. An above-normal level can confirm pregnancy. Its important to talk to your doctor about any changes youre experiencing throughout your pregnancy as well as any fears and concerns you may have. In women carrying a single child, hCG may reach over 200,000 mIU/ml. Miscarriage is devastating.Read more about grief and how to cope with miscarriage . I know this thread is old but just in case someone is still connected. Wang Z, Gao Y, Zhang D, Li Y, Luo L, Xu Y. Arch Gynecol Obstet. High hCG levels alone typically do not indicate that you are having twins, but it may increase your chance of pregnancy with multiples over the normal baseline hCG value for a singleton pregnancy. Doing the math to compare yours to mine, at 13dp5dp if you double, you would be about 575, so close to 1/2 of what mine was at the same time. HCG levels during miscarriage typically fall or don't rise appropriately. Bookshelf It truly depends on what point in time you are in your pregnancy, which can be difficult to determine if youre not sure of the date of your last period. In a typical pregnancy, the hCG levels peak around 10 to 12 weeks after the last menstrual cycle and slowly decrease throughout the pregnancy, and after the delivery, the hCG levels become undetectable. Home The hCG Levels That Could Mean Youre Having Twins. I think the level and presence of nausea early on might be more indicative? Other factors that impact the chances of miscarriage after IVF include a high BMI, an embryo biopsy on Day 6, and a high number of previous miscarriages. The two week wait refers to the time period between when an embryo implants versus when detectable levels of hCG are present. It has also been shown that not all doctors are equally competent at performing embryo transfers, and success rates can depend on the doctor performing the procedures. Leave it all down to hCG levels in the body. We have had three blood tests since our 5 day frozen transfer, and my numbers are much higher than they were with our son. Good news: Multiples can be detected by ultrasounds as early as 6 weeks after conception! The higher your levels of hCG are initially, the higher they will be throughout your entire pregnancy. In fact, during the first four weeks, hCG levels double every 48 to 72 hours. The first blood test for hCG typically provides your doctor with a baseline. Age: 27Reason for IVF: PCOSMature eggs retrieved: 45Fertilized: 32Day 5: 12Genetically normal: n/aTransfers: 2 (1 failed transfer)Live Births: 1 - twins! Yet, it is important to keep in mind that decreasing hCG levels arent a definite sign that a miscarriage is taking place. Read up. Before The HCG is produced by the embryo and is the embryo's signal to the mother that pregnancy has occurred. :-/. Age: 30 Reason for IVF: unexplained infertility Mature eggs retrieved: 17 Fertilized: 15 Day 5: 4 Genetically normal: 2 Transfers: 2 (1 chemical pregnancy . Serum -hCG levels5.34 U/L on the seventh day after FET predicted AP showing a moderate predictive value (AUC=0.843, sensitivity=71.43%, specificity=86.85%). A store-bought test will not reveal you exact hCG count, but a blood draw performed by your doctor can provide you with more specific hCG numbers. DOI: Seeber BE. At this time, a store-bought pregnancy test can not give you a specific hCG level; only a womans first visit to the doctor can determine the amount of hCG in her system through a simple blood draw. It is also common to have ultrasound screenings when there is a doubt over hCG levels. Accessibility About ten to 14 days after an embryo transfer, you will go back to your clinic for a blood pregnancy test (aka "beta", "beta hCG", or "-hCG"). There can be swelling in the veins after the blood samples have been taken. Did you do a 3 or a 5 day transfer? If you take a home pregnancy test, the results will be based on two main hormones estrogen and hCG. This can help patients avoid a transfer of an embryo that is genetically abnormal and would not lead to a healthy pregnancy outcome. with a low specific gravity) may not contain a representative levels of hCG, potentially leading to a false negative result. You would think more eggs is always better, but thats not the case. She is a professional member of the Association of Health Care Journalists and has been writing about womens health since 2001. We are with you every step of the way. In vitro fertilization (IVF) has come a long way since the first IVF baby was born in 1978. Reprod Biol Endocrinol. Essentially, a beta-hCG test is used to confirm and/or evaluate a pregnancy via a blood test in a doctor's office. . Pvoa A, Xavier P, Matias A, Blickstein I. J Perinat Med. A Group Leader is a What to Expect community member who has been selected by our staff to help maintain a positive, supportive tone within a group. Dilute urine samples (i.e. The body does not produce hCG; rather, it comes purely from the developing baby. found significantly different levels of -hCG in both viable and non-viable pregnancies in the group of fresh embryo transfer and . If youre feeling that this pregnancy is a little more intense than prior ones (or even just more than what your friends warned you to expect if youve never been pregnant before), theres a good chance it has run through your mind that you might be pregnant with twins.