Conclusions: A single HCG reading on day 12 after embryo transfer helps to plan the subsequent follow-up. The standards had been calibrated against the WHO Third International Standard of HCG for immunoassay (code 75/537). Learn more about. This culture usually takes place 2-5 days before the embryo is transferred to the wife's uterus. But a blood test can detect it earlier. 22 yrs old Female asked about After hcg level 320 have twins or not, 1 doctor answered this and 11286 people found it useful. You should generally wait at least 9-10 days after a day 5 blast transfer and 12-14 after a day 3 transfer to check the test. HCG level 15 days after embryo transfer AmyK227 3 months ago 8 Replies Yesterday at 15dp5dt I went for a blood test and my HCG is only 150. Male factor infertility and ICSI are associated with relatively low HCG values in viable pregnancies. In non-viable pregnancies, no significant differences in HCG concentrations were detected either in the aetiological subgroups or in the different treatment groups. Levels of hCG should be increasing by at least 60% every 2-3 days, but ideally doubling every 48-72 hours. Strategies to Cope During Fertility Treatments, Clomiphene Citrate For Women: A Complete Guide. Initiation of oral contraceptive pills Baseline ultrasound Ovarian stimulation and monitoring Final maturation HCG (trigger shot) and oocyte retrieval Fertilization Embryo transfer (3, 5, or 6 days after retrieval) Pregnancy test (10-12 days after transfer) Early OB ultrasound (6 1/2 weeks gestation) Initiation of oral contraceptive pills When an embryo implants every day the HCG level doubles in the early days. However, if your hCG level is falling, it is likely that the implantation was not successful. Good luck tomorrow! The number of women was 650. What is a Good First hCG Level after Embryo Transfer? 2005-2023Everyday Health, Inc., a Ziff Davis company. Enter the second hCG test date and beta hCG level, Step 4: Calculate and examine the results, Example Results from an IVF hCG Calculator, IVF Comparison Tool: Compare Fertility Clinics Success Rates, Fertility Clinic Rankings in the United States, IVF Cost Calculator: Costs of Own eggs, Donor, Surrogate, FET, ICSI and PGD, IVF due date calculator with one baby,twins or triplets, including 3 day and 5 day, IVF Success Rate Calculator Predict the Likelihood of Live Birth After IVF, Own eggs, Fresh donor eggs, Fresh donor embryos, consider the egg retrieval date as 0 day of DPO date, 14 days later after the egg retrieval date, consider embryo transfer date as 3 days of DPO date, 11 days later after the embryo transfer date, consider embryo transfer date as 5 days of DPO date, 9 days later after the embryo transfer date, Tell you the difference in levels from the first and second test, as a percentage (i.e., +525/+700% or -25/-67%), Give you a 2-day increase rate, regardless of how many days passed between your tests. An hCG level of less than 5 mIU/mL is considered negative for pregnancy, and anything above 25 mIU/mL is considered positive for pregnancy. About 10 days after your transfer, your doctor will have you come in for a blood test to check your human chorionic gonadotropin (or hCG) levels. You have no idea how much you just put me at ease. So my second beta was 126 at 10dp5dt. With that in mind, here are examples of a normal doubling rate and a lower than normal doubling rate. Then, it should stabilize, and then eventually decline until the delivery date. hCG is not a hormone that your body usually produces. BACKGROUND: Assisted reproduction treatment (ART) entails a risk of ectopic pregnancy and early pregnancy loss. September 2011. 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 Serum HCG concentrations were measured by fluoroimmunometric assay. (Not fun, but a small price to pay for your sweet little bundle, right?) Successful ovulation is the first step to getting pregnant; get support from a licensed healthcare provider. Evidence from recent studies has supported the importance of serum progesterone level around the time of embryo transfer in hormonal replacement therapy frozen embryo transfer cycles and recommended the need for individualised luteal support. Methods: So, if your first beta is low, do not panic! Learn more about. My home pregnancy tests have been stronger every day but the digital one only said 1-2 weeks. I had my 3rd FET on 11/8, I had my blood test today and it came back at an 18. Male factor infertility was associated with viable pregnancies (P = 0.004) and tubal factor with non-viable pregnancies (P = 0.003); the lowest HCG level (88 IU/l) was observed in subjects with both male factor infertility and ICSI treatment (P = 0.001). Ceska Gynekol. Serum hCG-beta levels of postovulatory day 12 and 14 with the sequential application of hCG-beta fold change significantly increased predictability of pregnancy outcome after IVF-ET cycle. For example, equal proportions of biochemical pregnancies, miscarriages, and viable pregnancies were observed at an HCG level of 3040 IU/l, which suggests that a second HCG reading a few days later would be helpful. This is because fluid build-up from OHSS could dilute the blood levels. At-home urine tests require higher levels of hCG to detect a pregnancy, typically at least 20 mIU/mL. Low progesterone around the time of . This proportion rose to 26% with implantation on day 10 [5DP5DT], to 52% on day 11 [6DP5DT], and to 82% after day 11 [7DP5DT]. hCG levels are higher in multifetal pregnancies than in singleton pregnancies. . Congratulations! In 1999, the number of embryos transferred per cycle was 1.7. If you have concerns about your beta hCG numbers, always talk to your doctor. The median HCG concentration was 126 IU/l in viable pregnancies and 31 IU/l in non-viable pregnancies (P < 0.0001) (Table I). In general, you should see your b hCG levels rising by ~50% every 48 hours. A chemical pregnancy refers to a pregnancy that has been identified only through a beta hCG test but failed to progress. First, its because 5 mUI/ml hCG level is not indicative of pregnancy after IVF; it only indicates that there is hCG present in the body. In simplest terms, the beta hCG test tells you how much hCG is in the blood. Some or all of the eggs will be fertilized. Hernandez-Nieto C, Lee J, Alkon-Meadows T, Briton-Jones C, Sandler B, Copperman A, Mukherjee T. J Assist Reprod Genet. Please select a reason for escalating this post to the WTE moderators: Connect with our community members by starting a discussion. Tell you how long its taking for your hCG levels to double, based on your information (i.e, 16 hours). At that point, a pregnancy should be visualized in the uterine cavity using a transvaginal ultrasound. Preorder Now . (i.e., 700%). The data on this IVF hCG calculator is not intended to be a substitute for professional medical diagnosis or advice. His embryo transfer date is March 1, 2017 and input 01/03/2017. Day 11: The embryo is surrounded by fluid inside the amniotic sac. The main cause of infertility was anovulation in 47 (6%) cycles, endometriosis in 105 (14%), male factor in 128 (17%), tubal factor in 235 (30%), unexplained in 203 (26%), and combined in 56 (7%). This educational content is not medical or diagnostic advice. Initially, hCG levels are quite high. The study by Stone et al., showed that the doubling times of serum -hCG (-t2) increased from 1.6 days on day 12, to a doubling time 3 days on day 24 after embryo transfer [ 11 ], suggesting that -hCG doubled more quickly in early pregnancy. I've read of a lot of people who then do a Clear Blue digital test which has shown a different number of weeks pregnant to what they were expecting which has caused them concern, but I think these tests can only really give a rough indication of how far along you are. Very low. He is a Fellow of the American College of Obstetricians and Gynecologists and Member of the American Society for Reproductive Medicine. We think she was a late implanter so numbers really low at first but then got right on track and ultrasounds have been good! Progesterone levels are usually higher when you are pregnant, but even in a non-pregnant patient, they can reach 20 ng/ml. Third-trimester pregnancy: 48.4 to 42.5 ng/mL. I am on 1ml progesterone oil intramuscular every day, three times per day 200mg progesterone suppositories, baby aspirin once a . To use an IVF hCG calculator for post-IVF treatment, you need to know: On the date of transfer, what stage will the embryos be in? hCG levels 14 days post 6d frozen embryo transfer. @Praying4Baby86, oops, edited. If you want to learn more about fertility treatments, sign up for my personal IVF newsletter. Below are the average hCG levels during the first trimester: 3 weeks LMP: 5 - 50 mIU/ml 4 weeks LMP: 5 - 426 mIU/ml 5 weeks LMP: 18 - 7,340 mIU/ml A low HCG concentration alone is therefore not a suitable marker for EP. The HCG hormone level in the blood doubles every 48-72 h. Although I am a physician by profession, I am not YOUR physician. I had my fresh transfer at the beginning of December. I had a beta done 8dp5dt, and it was a 183. The intra-assay variation was 2.75.1% and inter-assay variation 1.63.9% at the studied HCG levels. First some basics. 2005-2023Everyday Health, Inc., a Ziff Davis company. You should not rely solely on this information. In an IVF procedure, a pregnancy test is done after two weeks to check the results. Patients identified as having a biochemical pregnancy were found to have median hCG levels of 36.15 IU/l. Today I am 8dp5dt and had my beta done. PMID: 7580002. My REs office does first beta 13dp5dt and then two days later but mine happened to fall on a weekend. You need information from both of your hCG blood tests. It is called the pregnancy hormone because it is only present during pregnancy and can be detected by early pregnancy tests or a blood test. 191: Tubal Ectopic Pregnancy, Obstetrics & Gynecology: February 2018 Volume 131 Issue 2 p e65-e77doi: 10.1097/AOG.0000000000002464. But you may wonder how to calculate the date because all the hCG level charts go by DPO(days past ovulation) or LMP( last menstrual period). Read more about Strategies to Cope During Fertility Treatments. Will keep you posted! IVFauthority.com does not provide medical advice. Beta human chorionic gonadotropin (b-hCG), the hormone that indicates that the fertilized egg has implanted into the uterine wall, rises at around 7 8 days after implantation. HCG levels 8 days after FET? Dr. Karande is Board Certified in the specialty of Obstetrics and Gynecology as well as the subspecialty of Reproductive Endocrinology and Infertility. Is this too low?? 3 embryos made it to blastocyst. A gestational sac and a yolk sac should be visible on ultrasound to be categorized as a clinical pregnancy. The real date may be slightly different. The differences could be partly due to the different HCG assays used, and partly due to our decision, unlike the others, to regard the five late miscarriages (which have relatively high initial HCG) as non-viable pregnancies. Your lines from 10dp look great and looks like indeed , she was a later implanter ))) and with girls, HCG seems to start producing later than with boys. Is my hCG level normal? How to calculator hCG levels after IVF? Use our IVF hCG calculator and youll know! There are cases of multiple pregnancy that reach values close to 600 mIU/ml within 14 days after embryo . Instead, it would be best if you have your doctor perform a blood pregnancy test. I did do a home pregnancy test yesterday morning at 5am, I left it in the bathroom did a pregnancy test and it was negative. So what is a good hCG level to look out for? Supplements to Take During Fertility Treatments and IVF, The IVF Funnel: Understanding Your Chances of Success, 10% off your first month when you subscribe with code LUCKY23, Ovulation support program with a licensed healthcare provider. In addition, this is a qualitative test, meaning that it only tells you if the value is positive or not. and transmitted securely. Micronized vaginal progesterone (600 mg/day) was then started, followed by embryo transfer after 3 to 4 days. lower end of this range might indicate a problem with embryo implantation. The treatment included IVF in 518, ICSI in 119, and frozen embryo transfer in 137 cycles. If pregnancy still +, the woman returned at 5.5 weeks to confirm pregnancy was intra-uterine . CONCLUSIONS: A single HCG reading on day 12 after embryo transfer helps to plan the subsequent follow-up. When two or more follicles reached a diameter of >17 mm (in TVS), 10 000 IU of HCG was administered. ROC curve for predicting viable pregnancy by serum HCG concentration at 12 days post embryo transfer. Conclusions: (, Strandell, A., Thorburn, J. and Hamberger, L. (, Sugantha, S., Webster, S., Sundar, E. and Lenton, E. (, Tiitinen, A., Halttunen, M., Hrkki, P., Vuoristo, P. and Hyden-Granskog, C. (, Tulchinsky, D., Tulchinsky, A., Paoletti-Falcone, V., Nash, H., Pazdziorko, S. and Brown, K. (, Oxford University Press is a department of the University of Oxford. Days after implantation relative to hCG values are estimated and not part of the study.) 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, 23 38 weeks DPO: 3,640 117,000 mIU/ml, First test: Number of days since the transfer, and the beta hCG level on that day, Second test: Number of days since the transfer, and the beta hCG level on that day, Own eggs IVF (This option includes ICSI or no), Fresh donor egg IVF(This option includes ICSI or no), 3 Days frozen embryo transfer(This option calculate hCG levels after IVF 3 day transfer), 5 Days frozen embryo transfer(This option calculate hCG levels after IVF 5 day transfer). It is used to diagnose pregnancy and a result greater than 5 mIU/mL is generally considered positive. 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. Although this happens, the good news is that research shows that the outcomes of these pregnancies remained comparable to those of IVF pregnancies without OHSS. BFP April 12 - E born December 2012 at 39w, 1d Report 0 Reply. Blood tests give the best results when taken 7-8 days after ovulation. HCG can affect your body in other ways. On the flip side, there are some hCG tests that just tell you whether or not there is any hCG in the blood. Understanding Test Results. Clipboard, Search History, and several other advanced features are temporarily unavailable. Report 0 Reply to Post. That's what I thought. I heard hcg doubles every 48 hours, does this apply to whatever baseline we have? JBRA Assist Reprod. An abdominal ectopic pregnancy following a frozen-thawed ART cycle: a case report and review of the literature. Epub 2010 Jan 11. Another study even showed that there is a lower rate of early miscarriage in the OHSS group (7.8%) than overall (16%). You have to use exact numbers, so you cant use basic hCG strips that you buy in a drugstore or pharmacy. Disclaimer: Every Patient is different, so beta hCG of IVF given are approximate. Here are the expected hCG ranges in the first 18 weeks of pregnancy: IVF fertility treatment can be an amazing way to grow a family. 1 7 7 comments Best Add a Comment [deleted] 2 yr. ago The mean -hCG concentrations on days 11, 14 and 21 after OR in fresh IVF/ICSI cycles and on days 6, 9 and 16, respectively, after blastocyst transfer in cryocycles, were significantly lower in the group of patients with a miscarriage compared to the group with a term delivery (p = 0.02, < 0.001 and < 0.001, respectively). The level of hCG may double every 2-3 days in early pregnancy. E-mail: aila.tiitinen@hus.fi, Bergh, T., Ericson, A., Hillensj, T., Nygren, K-G. and Wennerholm, U-B. UsedToBeGoldie member. glad to hear its jumped Amy, I had low HCG and all turned out fine. Thank you so much for that!! Background: Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked. In the subjects with tubal factor infertility, the overall rate of EP was 14/235 (6%). Neither odds of implantation nor clinical pregnancy were influenced by maternal age, BMI or blastocyst expansion grade. Optimal time interval between hysteroscopic polypectomy and frozen-thawed blastocyst transfer: A retrospective study. Analyses involving non-viable pregnancies were therefore carried out by the non-parametric MannWhitney U-test or Kruskal-Wallis analysis of variance. so true! ;). One hundred eleven patients had positive serum quantitative hCG levels 14 days post-ET; 89/111, or 80.2%, had ongoing pregnancies. Our study did not include comparison with spontaneous pregnancies, but others have reported that early HCG in spontaneous pregnancies is higher than that in the IVF pregnancies (Tulchinsky et al., 1996; Ertzeid et al., 2000). have significantly higher hCG levels compared to singletons. I had 1 AA/5 day embryo transferred 12 days ago and got a positive blood test but with a hCG level of 12.2. Although the EP in our series were clearly associated with low HCG values, they could not be distinguished from the much larger group of other pregnancies with similar levels of HCG. And as you said, the doubling is key! The explanation for this was not clear. The below form might help give you some closure. Wish Id have waited till 14 days as recommended as Im eggs but only had 4 retrieved and two didnt make it so I have no more eggs. Given that there is a wide range of levels that your b hCG level can be in early pregnancy, it is best to look at the trend rather than the absolute number. 12-16 days after a blastocyst transfer, you would be approximately 4-5 weeks gestation, which can correspond to a beta hCG level as low as 50 or as high as 1,000+ mIU/mL. It is used to diagnose pregnancy and a result greater than 5 mIU/mL is generally considered positive. this gives me so much hope! 2/8 would be 1dp, correct. 8600 Rockville Pike since the most important part is for HCG to double in 48-72 hours .Hopefully it does . Another study found thatgender-related difference inHCG does existas early as three weeks after fertilization, but thatthe difference is not strong enough to be used to predict fetal sex"because of the small proportion of pregnant women with serum HCG concentrations that are high or low enough to allow a prediction with high probability". A home test can first detect hCG levels that indicate pregnancy about 12-14 days after conception. Statistical analysis was performed using NCSS 2000 software. eCollection 2020 Jun. The views expressed in community are solely the opinions of participants, and do not reflect those of What to Expect. MeSH terms Chorionic Gonadotropin / blood* Embryo Transfer* Fallopian Tube Diseases / complications Female Forecasting Humans Avoid checking an over the counter pregnancy test, as testing too early can result in a false negative. The results on an ultrasound after 5 - 6 weeks gestation are much more accurate than using hCG numbers . Bleeding During IVF - What's Normal and What Isn't? No correlation between age and HCG level was observed in viable pregnancies (P = NS). The detection limit of many at-home pregnancy tests is approximately 25mlU/ml. But you should not have to worry about determining the stage of the embryos at transfer. Beta Hcg levels 41015 Views . Data from a study of 123 IVF participants. However, the ultimate goal is a live birth, which is when you give birth to a healthy child. Unauthorized use of these marks is strictly prohibited. For the speediest answer, check out our FAQ section. Our time point for HCG sampling was the earliest suggested as being useful (Legro et al., 1995; Qasim et al., 1996; Bjercke et al., 1999). A human chorionic gonadotrophin (-hCG) test was performed 12 days after embryo transfer. Disclaimer. A day 3 embryo is still in the process of growing and dividing into a blastocyst. Group Owners uphold the core values of the brand by reporting content that violates the community guidelines. If you find an IVF hCG calculator online, you may notice the word beta, as in the beta hCG level. Most people do not understand what this means. Non-pregnant females: <5.0 mIU/ml. The median HCG concentration was 115 IU/l in singleton pregnancies and 201 IU/l in multiple pregnancies (P < 0.0001). A second test is scheduled when the first test is positive. The test was considered positive if the -hCG level was > 5 IU/l. With that in mind, heres what you can expect to see: Keep in mind that the point of an hCG test is to determine if hCG levels are rising at a rate thats consistent with pregnancy. For women with ovarian hyperstimulation syndrome (OHSS), hCG levelsmay fluctuateabnormally. The night after embryo transfer, all patients started vaginal progesterone. Gold RS, Azem F, Yovel I, Wagman I, Amit A, Lessing JB. Endometrial maturation and early HCG have usually been compared either within fresh embryo cycle subgroups or between fresh embryo transfers and spontaneous pregnancies (Tulchinsky et al., 1996; Hsu et al., 1998; Ertzeid et al., 2000). Human embryos can produce hCG as early as 8 days after fertilization. Our beta hCG calculator covers all IVF treatments, including HCG levels after IVF 3 days transfer, and 5 days transfer. Lol. In viable pregnancies, an exponential transformation gave a good fit to normal distribution allowing use of Student's t-test and one-way analysis of variance (ANOVA). National Library of Medicine I had my transfer November 22nd with one frozen embryo. This may be helpful if you are curious about whats considered normal (hint: normal doubling rate covers a very wide range of increase in hCG level). eCollection 2020. and if I may ask- do you expect a Girl? Then, you move onto a vaginal ultrasound at five to eight weeks to look for both a heartbeat and a gestational sac to confirm the pregnancy. Above 6,000 mIU/ml, the hCG often takes over four days to double. My clinic has me on HCG boosters so I know this will show a slight positive so they asked me to repeat my levels in 2 days to be sure. Affiliates + Influencersteam@natalist.com. So, if you were tested for hCG on March 10, 2017, you would choose or enter 10/03/2017. Cells from the placenta grow deep into the lining of the uterus, establishing a rich blood supply. All biochemical pregnancies were found at HCG levels <100 IU/l. My home pregnancy tests have been stronger every day but the digital one only said 1-2 weeks. The proportion of viable pregnancies associated with male factor infertility was relatively high (P = 0.004) and it was relatively low as regards tubal infertility (P = 0.03). The hCG level has to rise appropriately (it doubles every 3 days or so in early pregnancy) till it reaches around 1500 mIU/mL. It A low hCG level could mean the embryo has a slower implantation process. Second trimester pregnancy: 25.6 to 89.4 ng/mL. My doctor said it was fine to start off low and that the doubling every two days is whats really important. So, what is a good first hCG level after embryo transfer? I wouldn't worry about it too much. The same was true for the subgroup of male factor infertility. A receiver operating characteristic (ROC) curve was used to determine the HCG cut-off level that best discriminated between viable and non-viable pregnancies. The aetiology of infertility played some role in our study. 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. Just praying that things double on Thursday as they should. 85% of normal pregnancies will have the HCG level double every 72 hours. Please enable it to take advantage of the complete set of features! J Assist . How Effective is Letrozole for Ovulation Induction? Our first beta was 35 HCG, and we will be 21 weeks pregnant tomorrow (I got so nervous after the first test I broke out in hives during the weekend wait) Some of these frozen embryo's need a hot minute to get settled in. I tested positive on 5DPT. thank you! I have transferred two frozen embryos on May 22nd and my first beta on May 31st was 28. Multiple pregnancies which resulted in an sab had a median hCG concentration of 196.54 IU/l which was also significantly lower compared to serum hCG concentrations in live multiple birth/ongoing pregnancies. My transfer was on 2/7 and I have my beta tomorrow. In particular, patients with tubal factor infertility are at an increased risk of EP and should therefore receive special attention to avoid further impairment of fertility. Twin gestations will have higher levels than a singleton gestation at the same gestational age. The increase in the concentration of hCG in the blood is controlled with the help of special laboratory tests, which must be carried out almost daily. It can weaken your immune system and make you more susceptible to colds or infections. Patients who had serum hCG concentrations higher than 5IU/l on D12 post embryo transfer were stratified and evaluated. Yes, multiple pregnancies (twins, triplets, etc.) As soon as fertilization begins, the embryos begin aging. I had ectopic on Feb 2014 . sharing sensitive information, make sure youre on a federal Every woman is different and has her own hCG numbers after IVF. Now I'm kind of concerned. Please whitelist our site to get all the best deals and offers from our partners. 2018 Winter;83(5):329-336. The last transfers of three embryos were carried out in 1994. Male factor infertility and ICSI are associated with relatively low HCG values in viable pregnancies. If the level was less than 300, the ongoing multiple pregnancy rate was 9% (5/57). One study found that median hCG levels on Day 13 after a fresh embryo transfer were 329 for women with one baby and 544 for women carrying twins. (, Glatstein, I., Hornstein, M., Kahana, M., Jackson, K. and Friedman, A. Serum hCG values for viable and non-viable pregnancies were compared by Student's t test. Probability (%) of each pregnancy outcome within each of the 10 centiles of serum HCG concentration at 12 days post embryo transfer. Hoping to go for another draw tomorrow at 19dpt! If your hCG is rising, but not doubling, it doesnt necessarily mean that something is wrong. Although I strive to provide accurate general information, the information presented here isnot intended for the prevention or treatment of infertility and it isnot a substitute formedical or professional advice. It is not a pregnancy test. Your post will be hidden and deleted by moderators. With that said,I recommend that you dont check a urine home pregnancy test. Federal government websites often end in .gov or .mil. I started my first IVF cycle last month. Table III shows the aetiology of infertility in relation to the outcome. A pregnancy is visible on ultrasound only if hCG levels are more than 1500 mIU/ml. The treatment included IVF . Consult with your fertility doctor before using any of these information or treatments. After 36-40 hours of ovulation induction, the wife will be anesthetized to collect the eggs while the husband will have the sperm collected. If theres any concern about a high hCG level, your doctor will review the test results and discuss the next steps. Our goal is to retrieve the eggs after they become mature but before they ovulate. Day of transfer is 0dp. These numbers are specific to the assay the researchers used (solid phase, two-site fluroimmunometric assay calibrated against the WHO Third International Standard of hCG for immunoassay). You are considered pregnant with any detectable level of hCG. All my other transfers were 6 day embabies. Would you like email updates of new search results? The approximately doubled HCG level in twin pregnancies is in accordance with the results of previous studies (Schimdt et al., 1994; Glatstein et al., 1995; Bjercke et al., 1999). Here are the options: And then, You can choose the egg retrieval date or embryo transfer date from the dropdown calendar or enter the start date by mm/dd/yyyy. The most sensitive, accurate and reliable pregnancy test is a blood test for the presence of beta HCG , often just called "beta". My hcg is4273.