Hcg for twins

HCG is a poor indicator. And no, none of us should wish for twins, but at the same time we do wish for each embryo to make it. J. Jaztastic. Mar 3, 2014 at 10:49 AM. HCG is a bad indicator. The levels vary so much and much of the levels for singleton and twins overlap anyway. Its best to try to not stress and just wait until you ultrasound to ...

Hcg for twins. Twin mole/fetus pregnancies are typically diagnosed at a later gestation resulting in more obstetrical complications, larger uteri, and high hCG levels. Delay in diagnosis due to a false negative pregnancy test related to the "hook effect" resulted in thyroid storm in our patient.

m. mollymac. Aug 4, 2010 at 8:28 PM. @lemongrass613, We did IUI and at 15 dpo my hcg was 414. 17 dpo it was around 800. Found out it was twins at 5w3d. When the nurse called with my initial hcg she said "there might be two in there". I know hcg levels are not supposed to be reliable but in my case they were. l.

However, home kits are available and can test hCG levels as early as 4 to 5 days after implantation. Enter the date of your first hCG test. So, if you were tested for hCG on March 10, 2017, you would choose or enter 10/03/2017. Next, enter the results from the beta hCG test into the IVF hCG calculator. Step 3.Higher than average hCG levels might indicate that you're having twins or triplets, but you'll need an ultrasound scan to confirm this. "A normal blood level for hCG on the day a period is due (14 days after ovulation) is 40 to 120 mIU/mL, but levels are up to 400 in multiple pregnancies!" she says.Slow hcg rise, early twin demise. Advice Needed. My hcg level at 7+6 was 69000, and at 8+1 is 77000. Ultrasound at 7.6 showed baby with growth right on for dates and strong heartbeat at 168. Also discovered a second sac where an embryo did not develop, which was explained as the cause of my spotting and bleeding over last two weeks .According to Greves, if you're pregnant with twins or multiples, your hCG levels may be higher than if you were having a singleton. (But a high hCG level doesn't automatically mean you're expecting more than one baby—again, levels of hCG can vary by person and pregnancy.) In fact, Lamppa says high hCG levels can be normal with a ...Yes my HCG at 5 weeks was 4000 and I'm pregnant with twins! I swear HCG means nothing. My friend who has a singletons numbers were worlds above ours! We thought she had twins for sure! You just never know! at 5w 3d, my hcg was at 10,102, and at 5w5d, it was at 21,867.When one fertilized egg splits into 2, the babies are called identical twins. They look almost exactly alike and share the exact same genes. ... HCG is a hormone your body makes during pregnancy. Alpha-fetoprotein is a protein that a developing baby makes during pregnancy. Your provider can use ultrasound to find out for sure if you're ...All the comparisons show my hcg is high so likely twins but my First scan is in 3 weeks. Yes, with twins. What is your level? I had 420 at 10dp5dt, Todays (16dp5dt, equivalent to 21dpo) beta shows 4,800, so at 5+2 i Should be 9,600ish...

Background: Serum human chorionic gonadotrophin (hCG) is higher in twin than that in singleton pregnancies. As hCG stimulates the thyroid to produce more free thyroxine (FT4), which may lead to decreased thyroid-stimulating hormone (TSH) levels, the reference ranges of thyroid-related indicators may differ between singleton and twin pregnancies in the first trimester. Beta hCG levels were taken 12 days after an embryo transfer. What does a high beta hCG mean? A high beta hCG could indicate multiples (twins or triplets), which would be confirmed through an ultrasound. 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. Ivf- Care to share your hcg for twins? l. lindavbang. I'm on my 3rd cycle of ivf. 1st time we mc 2nd was a fail, and 3rd we are finally pregnant! My first ultrasound isn't until next week and I can't wait!!!! My hcg levels 10dp3dt was 186. And 15dp3dt It was 1180. Jw if there could be two or a strong singleton.4 week HCG Levels. a. aml2204. Mar 28, 2016 at 11:29 AM. Hi there! This month I took Gonal f injections and had 17, 15, 15, 14 and 13 follicles the day of trigger. I just received my first bets and it was 135 12 days past IUI. She said it would probably be around 270 on day 14 and that it was probably twins.The first trimester screening programme offers a noninvasive option for the early detection of aneuploidy pregnancies. This screening is done by a combination of two biochemical markers i.e. serum free β-human chorionic gonadotrophin (free β-hCG) and pregnancy associated plasma protein A (PAPP-A), maternal age and fetal nuchal …March 2016. My hCG at 4w6d was nearly 3,000, just one healthy singleton in there (I'm 27 weeks now so I'm pretty sure they would have found a twin if there was one). There's a HUGE range of "normal" for HCG, you could have a "normal" hcg of 1000 and have it be from 2 babies each pumping out 500 each or you could have a super overachiever in ...The typical hCG level around four weeks of pregnancy is around 140 mIU/ml 5, so a high hCG level can be generally considered to mean you are pregnant. However, there are some very rare medical conditions that can cause high hCG levels. If you get a positive result on a pregnancy test and you haven’t had unprotected sex since your last ...

5 weeks exactly today and got my blood work back. 14dpo- 232. 16dpo (4weeks)- 483. 23dpo (5 weeks)-7906 ???? If hcg doubles every 48+ hours the numbers are way higher than I was expecting! We had an IUI and I had 3 viable eggs and I'm super nervous it's going to be a multiple pregnancy.If anyone knows they have twins what were your hcg numbersMine came out higher than usual at 5 wks 4days it's 15411 I really hope it's just one baby#2 You have elevated hCG or AFP levels. One of the earliest signs that you may be pregnant with twins is elevated hCG levels. hCG (human chorionic gonadotropin) is the pregnancy hormone that your body releases after conception. AFP is another protein that your body releases during pregnancy, and it helps the placenta to develop properly.13–16 weeks from LMP. 13,300–254,00 mIU/mL. 17–24 weeks from LMP. 4,060–165,400 mIU/mL. 25–40 weeks from LMP. 3,640–117,000 mIU/mL. Because every pregnancy is different, it's important ...If you’re in the market for a new bed or mattress, you may find yourself overwhelmed by the wide range of options available. From twin to king, there are various sizes to choose fr...A. Apetrushonis. Jan 20, 2021 at 3:46 PM. Been pregnant with twins twice hcg was always with in the normal range of pregnancy never an indication of multiples. One was hiding until 9w and I had an ultrasound every week from 4w on. Like. PM921. Jan 20, 2021 at 3:52 PM.

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Your hCG levels will also be a lot higher than with a singleton pregnancy but you would only be able to know that with a blood test (which is typically done with reproductive …Some common signs of a twin pregnancy include: More morning sickness. Nausea and vomiting can be worse in a twin pregnancy, thanks to higher levels of the hCG hormone circulating in your system. You may notice that it starts earlier, and lasts longer. And severe nausea and vomiting, a condition known as hyperemesis gravidarum, is more common ...Multiple pregnancies; you’re pregnant with twins or more. If you are carrying twins, your hCG levels could be 30-50% higher. Molar pregnancy; if a molar pregnancy occurs, there’s a growing mass in the uterus but it won’t develop into a baby. The mass is known as a hydatidiform mole and produces high levels of hCG.Sep 10, 2023 ... ... HCG Level is 801!! To give everyone an idea of HCG levels 3 Weeks ... Moms/Twins/Multiples/Parenting/tips/hacks. Follow. brittaniborenleach.When it comes to finding the perfect twin size blanket, it’s important to consider not only the design and color but also the dimensions. Understanding the measurements of a twin s...

A blood test is the most accurate way to detect hCG levels, because more of the pregnancy hormone is present in the blood than in the urine. Plus, blood tests need less of the hCG hormone to detect a pregnancy, as explained below: Blood tests. Pregnancy blood tests can detect hCG hormone levels as low as 5 to 10 mIU/mL. Urine …It creates an hCG levels chart which allows you to monitor the increase associated with the low, average, and high hCG levels. hCG Levels In Twin Pregnancy. A twin pregnancy cannot be detected from hCG values. The hCG levels rise faster in case of twins, but there isn't much scientific data on this.Have you ever wondered if you have a doppelgänger out there? Thanks to advancements in face recognition technology, it is now possible to find your twin with just a simple click. O...HCG levels were higher among twins and triplets compared to singletons, and lower among women with greater BMI. In the multivariable regression, there was no ...But for every 20 pregnancies conceived with Clomid, only one will result in twins. Clomid (clomiphene), a pill taken by mouth to induce ovulation, causes twin pregnancies between 5% and 12% of the time. That's fewer than one in 10 pregnancies. Your odds of conceiving triplets (or more) on Clomid is even lower: less than 1% (less than one in 100 ...If you're wanting twins I wouldn't look into that and get your hopes up, just wait it out until you get to see for sure (I know that's tough). Your mom being a spontaneous triplet (you'll find spontaneous to be the correct term vs natural) is a better indicator of you having multiples than your Hcg numbers.It's actually possible for twins (or triplets, quadruplets, etc.) to cause a false negative pregnancy test. That's because multiple pregnancies produce elevated levels of hCG, and if they're high ...I'm expecting twins and my HCG was 1451 at 17 DPO. There's such a wide range of "normal" HCG levels, so I don't think that's a good metric to use to guess whether you might have a twin pregnancy. My progesterone level was on the high end at 17 DPO, and that's what first made me suspicious that it might be twins. 6.I have two beautiful, healthy babies after infertility. They are boy/girl twins, and when I tell people that, they usually say, “You have one of each, now you can be... E...Certain medical conditions, such as cancer and pregnancy-related diseases, may cause high levels of hCG. Women having twins or triplets may also have high levels of this hormone, which can be ...Human Chorionic Gonadotropin (HCG) serves as a crucial marker, and unraveling its role becomes pivotal in comprehending twin pregnancies. Elevated HCG …Aug 9, 2023 · In the majority of pregnancies, HCG rise which is regarded as normal is a minimum of 60% over a period of 48 hours. If there are twins present, these levels can rise a lot more, yet it is usually not possible to determine twins just from HCG levels. For example, HCG can rise significantly even in a single pregnancy.

He said I may miscarry 1 or both but I wont know until Thursday : (. c. courtney3334. Oct 22, 2014 at 5:30 AM. @Jacobsgirl2015, I am 5w4d. Been bleeding since Sunday, went to er scan showed one sac, though I think the lady was clueless, and hcg was 3508. Went to dr mon scan showed two sacs but hcg dropped to 2870.

Infertility issues can be addressed with Human Chorionic Gonadotropin Hormone (HCG) shots for a woman — otherwise known as trigger shots — and Intrauterine Insemination (IUI). This process ... Low levels of hCG may be detected in a woman’s blood 8 to 11 days after conception. Sometimes with multiples, there is a higher, early trend in hCG levels. Twin and multiple pregnancies may also have 30 to 50% higher hCG levels than for one baby. Measuring hCG levels for twins cannot confirm the presence of twins. For women, hCG is given as an injection to stimulate ovulation during an ART protocol. This is commonly known as a trigger shot because it triggers ovulation about 36 hours later. HCG helps eggs ...A twin pregnancy causes the body to produce higher levels of pregnancy hormones, particularly human chorionic gonadotropin (HCG). This may intensify early pregnancy symptoms. Some potential signs ...M. Midasachilles. Jan 10, 2015 at 3:24 PM. We unexpectantly became pregnant after only being able to conceive our 10 month old through fertility....hcg has only went from 13 to 29 to 42. They were all 2 days apart. Basically waiting to miscarry, but No signs yet. We are so blessed that we have our little guy and this gives us hope to naturally ...HCG can cause early puberty in young boys. Call your doctor if a boy using this medicine shows early signs of puberty, such as a deepened voice, pubic hair growth, and increased acne or sweating. Using HCG can increase your chances of having a multiple pregnancy (twins, triplets, quadruplets, etc). A multiple pregnancy is a high-risk …Human chorionic gonadotropin(hCG), such as Novarel, Ovidrel, Pregnyl, and Profasi. This medication is usually used along with other fertility drugs to trigger your ovaries to release an egg ...

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If anyone knows they have twins what were your hcg numbersMine came out higher than usual at 5 wks 4days it's 15411 I really hope it's just one babyHCG levels were higher among twins and triplets compared to singletons, and lower among women with greater BMI. In the multivariable regression, there was no ...At 5 weeks 4 days i was 7000. The chart they gave me said up to 32000 is normal for 6 weeks and up to 165000 for 7 weeks, you might just be off by a couple days. I was 5 weeks 5 days and mine were 40,000 already.Signs of Having Twins at 5 Weeks. Higher-than-normal levels of hCG may indicate that you’re pregnant with multiples, but you’ll need to wait until your ultrasound for 100% certainty. Common early pregnancy symptoms of fatigue, frequent urination, breast tenderness, and food cravings are extra EXTRA — your symptoms are WAY more …Some advantages to being twins are that the twins have a sibling their age, may understand each other better and can have a strong bond while some disadvantages are that they may o...In early pregnancy, a 48-hour increase of hCG by 35% can still be considered normal. As your pregnancy progresses, the hCG level increase slows down significantly. Between 1,200 and 6,000 mIU/ml serum, the hCG level usually takes 72-96 hours to double. Above 6,000 mIU/ml, the hCG level often takes over four or more days to double.A quantitative hCG test specifically measures the amount of the hormone you're producing. However, the level of hCG varies widely for different women at the same stage of pregnancy — so a single measurement cannot be used to predict how far along you are or if you are pregnant with twins. The only way to confirm a twin pregnancy is with ...Results: One hundred eleven patients had positive serum quantitative hCG levels 14 days post-ET; 89/111, or 80.2%, had ongoing pregnancies. The spontaneous miscarriage rate was, therefore, 19.8% (22/111). If the level was less than 300, the ongoing multiple pregnancy rate was 9% (5/57). If the level was between 300 and 600, the ongoing ...The number of twin births jumped about 75 percent from 1986 to 2009, and currently there are about 32 twins born per every 1,000 births. What's behind this multiple-baby boom? The surge in older moms has a lot to do with it, along with an increase in fertility treatments and the rise in obesity, say experts.Normally, you do your first pregnancy test (HCG blood test) 14 days after embryo transfer. At this point, if the embryo has implanted, you will also get a positive urine pregnancy test. The HCG hormone level in the blood doubles every 48-72 h. If the HCG level doubles well, this indicates that the cells of the embryo are dividing well ...Human chorionic gonadotrophin hormone (hCG), is unique to pregnancy.It is the hormone detected in blood and urine. Tests for hCG are extremely sensitive, and only …Expecting twins or more: Your hCG levels might be on the higher side because each little one adds to the hormone count. Molar Pregnancy: Sometimes, unusual pregnancy conditions like molar pregnancy can increase your hCG levels through the roof in ways you wouldn't expect for a typical pregnancy. ….

Connection Between HCG and Twins. HCG or Human Chorionic Gonadotropin is a hormone that helps in detecting pregnancy. For a single baby, the hCG level varies from 70 to 750 mIU/ml (i.e., milli international units per millilitre, which is a unit to measure hormones). High hCG levels can be found for twins during the early stages for pregnancy.Oct 10, 2009 at 5:36 PM. @MrsCramer2u, Like the previous posters have said, hCG levels aren't a reliable indicator for multiples. In a normal healthy pregnancy hCG levels should at least double every 48 hours. When I was pregnant my numbers were within normal range and I was carrying twins.Twins - Hcg levels. G. GS5087. Hi girls. After 2 x miscarriages, 3 x chemical pregnancies and 4 unsuccessful rounds of ivf with own eggs, myself and my partner moved onto donor eggs and we just got our BFP!!! So thrilled! My beta blood tests show that my hcg levels are super high, so I am suspecting that it could be twins, which I would be ...Oct 15, 2014 at 5:42 PM. @courtney3334, We all know HCG is not a good indicator of multiples but I definitely still compared my numbers so here you go: 335 at 14dpo, 992 at 17dpo, and 6,812 at 21dpo. I did IUI. Found out it was twins at 6w5d. I will also add that, with DD at 22dpo, I was at 10,000+.During pregnancy. If you are pregnant, your hCG levels will be significantly higher than the average person. According to The American Pregnancy Association, hCG levels typically lie within the following ranges throughout pregnancy: Week 3: 5-50 mIU/ml. Week 4: 5-426 mIU/ml. Week 5: 18-7,340 mIU/ml.Are hCG Levels Higher with Twins? Sometimes with multiples, there is a higher initial hCG trend increase, says Maureen Baldwin, M.D., MPH, an assistant professor of Obstetrics and Gynecology at ...Outlook. Human chorionic gonadotropin, or hCG, is known as the “pregnancy hormone.”. HCG is made by the placenta and is tied to fetal growth. Small levels of hCG can be detected in the urine ...Pregnancies with vanishing twins demonstrated a significantly lower mean 2-day percent increase in β-hCG level than singletons and twins (114.3% vs. 128.8% and 125.4%, respectively). Vanishing twins arresting at earlier developmental stages demonstrated significantly further reduced β-hCG level increases. Hcg for twins, HCG levels are measured using MIU/ML, which means milli-international units per millilitre. A singleton pregnancy HCG range typically reaches between 25,700 and 288,000 MIU/ML at the 9 – 12 week mark. A pregnancy with twins may display higher levels than this at the same stage. You can find a HCG levels chart online., 13–16 weeks from LMP. 13,300–254,00 mIU/mL. 17–24 weeks from LMP. 4,060–165,400 mIU/mL. 25–40 weeks from LMP. 3,640–117,000 mIU/mL. Because every pregnancy is different, it's important ..., The highest value of hCG hormone after 21 days post ovulation is up to 19726 miu/l during singleton, while 20956 miu/l is the highest pregnancy hormone result for twins after the same period i.e. 5 weeks LMP/21 dpo. The average hCG level for singleton is 1721, while average twins hCG value is 3446 miu/l. Although, you can’t expect twins …, Chorionic Gonadotropin, beta Subunit, Human. Early β-hCG level increases are slower in vanishing twins than in singleton and twin pregnancies, with the slowest increases seen when the spontaneous fetal losses occur at earlier developmental stages. All increases, however, are within clinically accepted normal limits. Therefore, abnormal β-hCG ..., HCG levels are measured using MIU/ML, which means milli-international units per millilitre. A singleton pregnancy HCG range typically reaches between 25,700 and 288,000 MIU/ML at the 9 – 12 week mark. A pregnancy with twins may display higher levels than this at the same stage. You can find a HCG levels chart online., Peer Support Archive - READ ONLY. Archive, HCG levels are measured using MIU/ML, which means milli-international units per millilitre. A singleton pregnancy HCG range typically reaches between 25,700 and 288,000 MIU/ML at the 9 - 12 week mark. A pregnancy with twins may display higher levels than this at the same stage. You can find a HCG levels chart online., I doctor test for hcg. They stop usually when you double but this is my second ivf and first baby. I would like to compare numbers for fun - yes I know hcg levels in girls and over can be high and not mean twins! Just giving myself hope during my wait in my first ultrasound. 10 DPT 158. 13 DPT 756. 26 DPT 21104, During week 4 of a twin pregnancy, blastocysts will implant in the uterine wall and form into embryos, and their body parts will begin to form. Placentas, amniotic sacs, and yolk sacs will be forming at this time to support your babies, as well. Medically reviewed by Layan Alrahmani, M.D., ob-gyn, MFM. Written by Kandis Lake, R.N. | Nov 18, 2021., Hcg is tricky because it can be indicative of multiples, but also can mean molar/ectopic if it's super high- or just a singleton. The only real way to confirm if there is actually multiples is an ultrasound. With that said, here's ours: Conception: 8/2. 8/16- 252.5 HCG. 8/18- 609 HCG. 8/25- 14,386 HCG, You might better know hCG as the “pregnancy hormone.” When used as a trigger shot, however, hCG works more like the luteinizing hormone (LH) that is produced in your pituitary gland., HCG is detectable in urine at around 12 to 14 days after conception, when you're around 4 weeks pregnant. (The most common way to calculate your pregnancy due date is from the first day of your last menstrual period, which is typically two weeks before conception.). If you think you're pregnant but have a negative pregnancy test, it may be that you took the test too early, or that your urine ..., I've had my HCG levels measured at 5 and 6 weeks. At 5 weeks my reading was 7,500, and then 48,000 at 6 weeks. This seems super high when looking at charts and at levels others are reporting. I had my 7 week ultrasound which showed one single baby with a heart rate of 120bpm., The hCG trigger shot, for instance, can cause ovarian hyperstimulation syndrome, a condition that can result in painful, swollen ovaries. ... Does IUI increase your chance of having twins?, Congratulations :) my hcg was 967 at 11dp3dt & then 2 days later it tripled to 2987, I had one baby boy in there, he is now 16 months old. Hcg is no indication of twins & for where you are at (16dpo) you'd expect the hcg to be around the 600+ Like. Report as Inappropriate. J. Jamers7989. My hcg at 10dp5dt was 880 and I had twins! Like everyone ..., Hcg levels are not a very good indicator of multiples. Some women have levels very high and have a singleton. My first beta was 809. It more than doubled in 2 days. I was told that my numbers were in the normal range for my gestation period. My levels never went higher than the average singleton pregnancy. I had triplets., Elevated HCG Levels. Human chorionic gonadotropin (hCG) is a hormone typically produced in the placenta. When a woman gets pregnant, hCG can be detected in her urine. ... For women carrying twins, this can be more prominent, especially to foods such as green leafy vegetables, fish/seafood, coffee, and meat. It is also believed that there are ..., Women carrying twins often have higher hCG levels than singleton pregnancies, and the beta hCG test results for twins are often 30-50% higher than normal pregnancies. However, this difference is not apparent until later in pregnancy. The difference in hCG levels between pregnant women with each other and in the same woman pregnant at different ..., Twins (and higher multiples) generally see higher levels of hCG (about 20-30% higher for twins, not double.) Interestingly, elevated levels of hCG have also been linked with singleton babies with Down's Syndrome., I was shocked when I heard my numbers! It doesn't necessarily mean multiples yet, but it's way higher than the number I got when I was pregnant with Vera and..., Signs of Having Twins at 5 Weeks. Higher-than-normal levels of hCG may indicate that you’re pregnant with multiples, but you’ll need to wait until your ultrasound for 100% certainty. Common early pregnancy symptoms of fatigue, frequent urination, breast tenderness, and food cravings are extra EXTRA — your symptoms are WAY more …, On 21st aug my hcg was 31 , on 23rd Aug HCg was 51.5 and on 27th August hcg level is 473.98. On 2nd Sep hcg was 2576. I have gone through Frozen embroy transfer on 12th august 2023. Two 4AA grade embroy transferred. Please let me know if these HCG values are ok and also is there chances of twins in this., Aim for two to three servings of low-mercury fish a week. Eggs, which serve up 6 to 8 grams of protein each along with vitamin D and choline. Beans, including chickpeas, lentils, black beans, kidney beans and white beans. Each ½-cup serving delivers 7 grams of protein, which is the same as an ounce of meat., Objective: To assess the impact of a vanishing twin on the levels of the biochemical markers used in the first trimester aneuploidy screening. Methods: A retrospective analysis of free beta-hCG and PAPP-A levels in 270 women with a normal singleton fetus with ultrasound evidence of a vanishing twin pregnancy. Marker levels (as MoM) were compared in three groups-76 women with a second empty ..., 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. An hCG level between 6 and 24 …, Jul 19, 2022 · High hCG levels can be found for twins during the early stages for pregnancy. The normal hCG levels for twins is 30% to 50% higher than in single pregnancy- somewhere around 200 to 1750 mIU/ml. The level of hCG may double every 2-3 days in early pregnancy. , Are hCG Levels Higher with Twins? Sometimes with multiples, there is a higher initial hCG trend increase, says Maureen Baldwin, M.D., MPH, an assistant professor of Obstetrics and Gynecology at ..., I'm also wondering if I could be carrying twins bc of my levels. My levels at 4 wks. - HCG 274.6. - Progesterone >60. Levels at 4wks + 3days. - HCG 1483. - Progesterone 53.27. Scheduled for 3rd blood draw in 2days and U/S in a week. Hoping for twins but we did do a single day5 embryo transfer but I'm hearing that my levels may be indicative ..., Early signs of a twin pregnancy include severe morning sickness, quick weight gain, and more breast tenderness. Medically reviewed by Layan Alrahmani, M.D., ob-gyn, MFM. Written by Irina Gonzalez | Jun 30, 2023. Photo credit: Thinkstock., n. newmom2b34. Posted 08-25-09. hi, i had a miscarriage very early in my last pregnancy this past may '09. so i'm a little nervous with this new pregnancy. every ache, pain, spot anything, and I ..., Jul 6, 2022 ... Beta hCG calculator: What if hCG levels are low? · Higher than average hCG levels might indicate that you're having twins or triplets, but you'll&nbs..., Basically the tests are meant to detect HCG, period. They aren't meant to be a representation of how pregnant you are. They can't be used to measure how much HCG is in your system and too much HCG can even make them be negative. From what I've read, this starts happening after week 6., A normal hCG test works by surrounding the hCG molecules with antibodies. The hook effect happens when the hCG levels are so high—like in a pregnancy with multiples—that the hormone saturates the antibodies and they don't form around the hCG. Thus, you'll get a negative pregnancy test, despite being pregnant—with twins!