B hcg calculator - This application allows estimation of risks for trisomies 21, 18 and 13 at 11-13 weeks’ gestation by a combination of maternal age, fetal nuchal translucency thickness, fetal heart rate and maternal serum free ß-hCG and PAPP-A.

 
Human chorionic gonadotropin (hCG) is a chemical created by trophoblast tissue, tissue typically found in early embryos and which will eventually be part of the placenta. Measuring hCG levels can be helpful in identifying a normal pregnancy, pathologic pregnancy, and can also be useful following an aborted pregnancy. There is …. Phoenix airport security wait times

Aug 26, 2022 · At 18 DPO the serum hCG for singletons is normally between about 70 and 750 mIU/mL, and for twins, it can be between 200 and about 1750 mIU/ml. Calculate your actual hCG rise on the babyMed hCG Calculator. Are you always carrying twins when hCG increases too fast? In most pregnancies, the normal hCG rise is at least 60% over 48 hours. Screening for preeclampsia at 35–37 weeks’ gestation. Ultrasound Obstet Gynecol 2018; 52: 501-506. The Fetal Medicine Foundation is a Registered Charity that aims to improve the health of pregnant women and their babies through research and training in … The doubling time of hCG is very short during the initial weeks. As hCG values rise, the doubling rate decreases. You can expect the following doubling times. hCG under 1200 milli-IU/mL: between 30-72 hours. hCG between 1200-6000 milli-IU/mL: between 72-96 hours. hCG more than 6000 milli-IU/mL: over 96 hours. The general guidelines apply here. If you track your period and have a regular cycle (you can track this using an app like Flo ), then you can take a standard pregnancy test on the first day of your missed period. If you wait a week after your missed period, it’s worth knowing that you may get a more accurate result. Calculators and Tools » HCG Calculator. Calculate your hCG difference, the doubling time, 1-day increase and 2-day increase with our hCG calculator. First HCG Level. mIU/mL. Second HCG Level. mIU/mL. Days Between Tests. days. Days Past Ovulation. Calendar B-HCG. Test nr. Atentie ! Informatiile din aceasta pagina sunt valide din punct de vedere statistic, insa nu exista o garantie ca sarcina dumneavoastra va respecta acest calendar. Datele prezentate. aici au caracter informativ; consultarea acestei pagini nu tine locul unei vizite la medic. Foarte-foarte tare. Multumim! Low hCG concentrations measured in the late first trimester were also associated with decreased fetal growth (P = 0.0002). This was the case for both male and female fetuses. In contrast, high hCG concentrations during the late first trimester were associated with increased fetal growth amongst female, but not male fetuses.If the hCG value entered is over the range for 1 week, the calculator may report many possible results. Therefore, it is important to consider the closest possible week based on the last menstrual period. For example, the calculator may interpret an hCG level of 3.800 mlU/ml to be 5 to 6 weeks along, or 25 to 40 weeks along. 9,000 - 210,000 µ/L. 16 - 29 weeks (second trimester) 1,400 - 53,000 µ/L. 29 - 41 weeks (third trimester) 940 - 60,000 µ/L. Higher than expected hCG levels may happen if you’re are pregnant with twins and triplets. It may also happen if you have an abnormal growth in your uterus (womb). Falling hCG levels may show a pregnancy loss ... Week 10 of your pregnancy is Dec 22, 2021 - Dec 28, 2021. Your baby's organs are growing and beginning to mature. The baby's head comprises half the length of the body. Read our full post on week 10 of pregnancy >. Week 11 of your pregnancy is Dec 29, 2021 - Jan 04, 2022.Use this calculator to calculate the doubling time of two beta hCG samples by entering the values of the blood tests and the date and time of each test. Enter your test dates & … The number of IUs of HCG divided by the number of mls of mixing solution will give you the dose strength per ml. The formula is applied below to the most commonly used amounts. Chart: 5,000 divided by 10 = 500 IUs per ml. Result: 500 IUs is the the strength of the HCG per ml. You are now ready to calculate how much you will draw up into your ... May 9, 2022 ... Betabase Doubling Calculator. This sub ... 3rd beta showed the HCG was going down - chemical pregnancy. ... This study has a useful chart with HCG ...An ectopic pregnancy is an extrauterine pregnancy. While the majority of ectopic pregnancies occur in the fallopian tube, nontubal sites include cervical, interstitial, ovarian, and abdominal pregnancy. Other abnormally implanted pregnancies, including hysterotomy (ie, cesarean, myomectomy) scar pregnancies can also occur.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.Symbolab is the best step by step calculator for a wide range of math problems, from basic arithmetic to advanced calculus and linear algebra. It shows you the solution, graph, detailed steps and explanations for each problem.3. Role of hCG in Embryo Implantation and Trophoblast Invasion. The process of embryo implantation occurs approximately eight to 10 days after ovulation [] and involves a series of complex steps including: (1) apposition of the blastocyst at the endometrial surface; (2) initial adhesion of the blastocyst to the endometrium; (3) convergence of trophoblast microvilli with pinopodes, also known ...Beta-hCG (β-hCG) is a test that measures the amount of human chorionic gonadotropin (hCG) in the blood. This hormone is produced as soon as 10 days after …Are you in need of a reliable calculator software but don’t want to spend a fortune on it? Look no further. In this article, we will guide you through the process of finding and do...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.26500. 62000. 117400. 42. 28000. 65000. 128200. Beta hCG database, levels chart, scatter plot and doubling time calculator by days after ovulation, IVF embryo transfer and missed period in early pregnancy.An ectopic pregnancy is an extrauterine pregnancy. While the majority of ectopic pregnancies occur in the fallopian tube, nontubal sites include cervical, interstitial, ovarian, and abdominal pregnancy. Other abnormally implanted pregnancies, including hysterotomy (ie, cesarean, myomectomy) scar pregnancies can also occur.Workers are frequently given only pieces of information that concern net monthly income. Sometimes, that is not enough and you need to know your gross monthly income. To determine ...Conception date method. If you know the exact date of conception, try to use the second calculation method in the due date calculator. Our due date predictor will add 266 days (38 weeks) to the entered date. due date = date of conception + 266 days.Between 1,200 and 6,000 mIU/ml serum, the hCG usually takes 72-96 hours to double. Above 6,000 mIU/ml, the hCG often takes over four days to double.A great way to understand just how rapidly these levels increase is to look at weeks 4 and 5 during pregnancy. If hCG levels are taken and they not only double, but triple, quadruple or more, this ...Ultrasound calculators. Fetal Growth Calculator Create a graph to observe the growth of the fetus. Abdominal Circumference Calculator Calculate and graph the abdominal circumference of the fetus and watch it change over time. Biparietal Diameter Calculator Interactively creates a curve to watch the growth of the fetus' BPD biparietal diameter.By using HCG calculators alongside proper prenatal care and monitoring, individuals can gain a better understanding of their pregnancy journey and make informed decisions about their health and well-being. FAQs. 1. How early can an HCG calculator detect pregnancy? An HCG calculator can detect pregnancy as early as a few days before a missed period.Tax calculators are useful for those who would like to know information about their take-home pay after deductions occur. Here are some tips you should follow to learn how to use a...Doubling time calculator. Trouble with the calendar? Try this one. Date Time Beta; First beta Time: Beta: Second beta Time: Beta: Beta Charts: Doubling Times: Your Betas: HCG Information: Site Info: Chat: Beta Scores -- Single Pregnancy: Beta Scores -- Twin Pregnancies: Beta Scores -- Triplet+ Pregnancies : Doubling Time Charts -- Single ...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 just ...According to Mayo Medical Laboratories, the level of human chorionic gonadotropin will fall to half of its pregnancy concentration in the body within 24 to 36 hours of birth, misca... Typically hCG levels that fail to keep rising are a sign of: Ectopic pregnancy. Ectopic pregnancies happen when a fertilized egg implants somewhere outside of the uterus, like the fallopian tube or the cervix. When that happens, lower amounts of hCG are produced and the embryo can’t develop normally. HCG levels alone do not diagnose an ... Your doctors are looking to see a drop in your hCG value of at least 15% between days four and seven. If there has not been a 15% drop, this is when the doctors ...Conception date method. If you know the exact date of conception, try to use the second calculation method in the due date calculator. Our due date predictor will add 266 days (38 weeks) to the entered date. due date = date of conception + 266 days.Week 10 of your pregnancy is Dec 22, 2021 - Dec 28, 2021. Your baby's organs are growing and beginning to mature. The baby's head comprises half the length of the body. Read our full post on week 10 of pregnancy >. Week 11 of your pregnancy is Dec 29, 2021 - Jan 04, 2022.JustMommies Calculators. Our best calculators just for you! Infant's Growth Calculator. Due Date Calculator. Hcg Calculator » MORE. Quizzes. Have fun with Justmommies quizzes. Gender Prediction Quiz. Labor Prediction Quiz. Baby Personality Quiz » MORE. Charts and Printables. Use Justmommies charts, calendars, and printables! BBT Chart. …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 …Jun 23, 2023 · Human chorionic gonadotropin (hCG) is an important biomarker for detection of pregnancy and pregnancy-related disorders, as well as a useful tumor marker, particularly in the management of trophoblastic disease and germ cell neoplasias. It is also a component of some prenatal screening tests for Down syndrome. The Pregnancy Calculator can estimate a pregnancy schedule based on the provided due date, last period date, ultrasound date, conception date, or IVF transfer date. ... While clinical blood tests are more accurate, and can detect exact amounts of the hormone hCG (which is only present during pregnancy) earlier and in smaller quantities, they ...The first ultrasound, done between 10 and 14 weeks, is considered the most accurate method of estimating when you conceived. To calculate your due date using the Flo calculator, follow these steps: 1. Insert the date when you had your ultrasound in the “Date of ultrasound” field. 2. Insert the week and day of your pregnancy that was ...In general, hCG levels rise rapidly in early pregnancy and typically reach their peak around week 10. The specific levels can vary from person to person, but as a general guideline, hCG levels can range from around 5 to 50 mIU/mL at the time of a missed period and then double every 48 to 72 hours in the early weeks of pregnancy.13 - 16 weeks. 9,000 - 210,000 µ/L. 16 - 29 weeks (second trimester) 1,400 - 53,000 µ/L. 29 - 41 weeks (third trimester) 940 - 60,000 µ/L. Higher than expected hCG levels may happen if you’re are pregnant with twins and triplets. It may also happen if you have an abnormal growth in your uterus (womb). Falling hCG levels may show a ...The half-life of injected hCG is biphasic; the rapid phase has a half-life of 5–6 h whereas that of the slower phase is 24–33 h. The half-life of purified β-hCG injected into human is 0.7 and 10 h which is shorter than that of hCG. However, after term pregnancy or an abortion, β-hCG actually disappears more slowly than that of hCG.The quantitative test measures the level of hCG hormone in a blood sample. A healthcare professional takes a blood sample by following these steps: An elastic band is wrapped around your upper arm ...An HCG pregnancy test checks human chorionic gonadotropin (HCG) levels in the blood or urine. HCG tests can detect elevated HGC levels to determine if a person is pregnant. HCG tests can also ...Web site calcr offers users a very simple but useful online calculator. Web site calcr offers users a very simple but useful online calculator. As you perform your calculations, ca...The hCG doubling calculator can be used to find out how many days it will take for your hCG levels to double. Use the following steps: Enter your current hCG level in milli international units per liter (mIU/L). You can find this number on the pregnancy test that you took at home.The Clearblue® Early Digital Pregnancy Test and Clearblue® Early Detection Pregnancy Test, can detect hCG as early as 6 days before your missed period. 4,5. You can use the calculator below to check when you can take a pregnancy test. Most women have menstrual cycles that vary in length from cycle to cycle, which is perfectly normal.Sep 2, 2022 · Do you know your BMI and what it means for your health? Use this online calculator to find out your BMI and the corresponding weight status category. This tool is designed for adults, 20 years old and older, and based on scientific evidence. Learn more about BMI and how to improve your nutrition and physical activity. Jul 5, 2016 ... Pregnancy Type, B-hCG Change. Normal. Increase >53% in 48hrs (until 10,000 mIU/ml); Depends on the initial value:.If there is more than one common number, multiply all common numbers to get the HCF. You can verify the answer using the Highest common divisor calculator above. How to calculate LCM? Besides using common factor calculator for least common multiples, LCM can be calculated using several methods. Prime Factorization; Prime Factorization using ... The doubling time of hCG is very short during the initial weeks. As hCG values rise, the doubling rate decreases. You can expect the following doubling times. hCG under 1200 milli-IU/mL: between 30-72 hours. hCG between 1200-6000 milli-IU/mL: between 72-96 hours. hCG more than 6000 milli-IU/mL: over 96 hours. Symbolab is the best derivative calculator, solving first derivatives, second derivatives, higher order derivatives, derivative at a point, partial derivatives, implicit derivatives, derivatives using definition, and more. Is velocity the first or second derivative?First some basics. Human chorionic gonadotropin (hCG) is a hormone that is released by the human embryo after conception. It is used to diagnose pregnancy and a result greater than 5 mIU/mL is generally considered positive. The hCG level has to rise appropriately (it doubles every 3 days or so in early pregnancy) till it reaches around … The HCG doubling calculator finds all the values in sequence for women after fertilization and implantation of the embryo. Pregnancy week. Range of hCG levels in milli-international units per milliliter (mIU/mL) 3 weeks. 5–72 mIU/mL. 4 weeks. 10–708 mIU/mL. 5 weeks. 217–8,245 mIU/mL. Your doctors are looking to see a drop in your hCG value of at least 15% between days four and seven. If there has not been a 15% drop, this is when the doctors ...hCG is a hormone crucial for the maintenance of pregnancy, and its levels can provide vital information about the health and progression of the pregnancy. Using the hCG Doubling Calculator. After entering all the required information, click the “Calculate” button. The calculator will process the input data and display two key pieces of ...B = 3 grade points B- = 2.7 grade points C+ = 2.3 grade points C = 2 grade points C- = 1.7 grade points D+ = 1.3 grade points ... and thus whatever grade is attained in the course will have a larger effect on overall GPA. The calculator can account for this based on the number of credits attributed to a course, where credit is the "weighting ...Human Chorionic Gonadotropin. Human chorionic gonadotropin (hCG) is a hormone produced by the placenta during pregnancy. It helps thicken a person’s uterine lining to support a growing embryo and tells the body to stop menstruation. HCG levels rise after conception and continue to rise until about 10 weeks in pregnancy.Nov 12, 2020 ... Prognostic value of beta-human chorionic gonadotropin is dependent on day of embryo transfer during in vitro fertilization. Fertil Steril ... DPN data prezumata a sarcinii sarcina pe saptamani. Parlamentul European "constată că infertilitatea este o boală recunoscută de Organizaţia Mondială a Sănătăţii, care poate avea efecte grave, cum ar fi depresia; subliniază faptul că rata infertilităţii este în creştere, atingând în prezent aproximativ 15% din cupluri; invită, prin urmare, statele membre să garanteze ... Human chorionic gonadotropin (hCG) is a glycoprotein hormone (~37 kDa) composed of two noncovalently linked subunits – the α - and β‑chain (~15 and 22 kDa respectively). ... SI units Conversion Calculator. Convert Free β-subunit of human chorionic gonadotropin (free βhCG) level to ng/mL, mIU/mL, IU/L. Clinical laboratory units online ...HCG is first detectable in the blood as early as 7-8 days after ovulation by very sensitive HCG assays (research assays). In real life, blood pregnancy tests will be positive (> 2 mIU/ml) by 10-11 days after HCG injection or LH surge. In general, the HCG level will double every 2-3 days in early pregnancy. 85% of normal pregnancies will have ...The HCG (Human Chorionic Gonadotropin) Calculator is a valuable tool for individuals seeking to determine the number of weeks into pregnancy based on their HCG levels. HCG is a hormone produced during pregnancy, and its levels can provide insights into the gestational age. This calculator aids in estimating the duration of pregnancy with a ...An HCG pregnancy test checks human chorionic gonadotropin (HCG) levels in the blood or urine. HCG tests can detect elevated HGC levels to determine if a person is pregnant. HCG tests can also ...Below, you will find a table indicating hCG levels during each stage of pregnancy (for single foetus pregnancies). There are only a guide and there is no direct connection between a single foetus pregnancy and a twin pregnancy. Weeks since last period. Approximate range (mIU/mL) 3-4. 9 – 130. 4-5. 75 – 2600.hCG calculator is a tool for detecting whether or not you are pregnant and if the pregnancy is progressing normally. You can use it to calculate the hCG doubling … FAQs on hCG Levels Calculator. What is hCG? hCG stands for human chorionic gonadotropin, a hormone produced during pregnancy. When can hCG be detected? hCG can be detected in blood as early as 11 days after conception and in urine as early as 12-14 days after conception. What do low hCG levels mean? Low hCG levels can indicate a possible ... Our online due date calculator uses a simple method to calculate your due date. Your due date is estimated to be 40 weeks after the first day of your LMP. Your cycle is assumed to be 28 days long, with ovulation occurring at day 14. Therefore the calculator adds 280 days (40 weeks) to your LMP. This method of due date calculation is known as ...A recent study identified patients with only a 53% increase in serum β-hCG levels over 2 days who had a viable intrauterine pregnancy. 28 Thus, demonstration of normal doubling of serum levels over 48 hours supports a diagnosis of fetal viability but does not rule out ectopic pregnancy, and a rising β-hCG concentration that fails to reach 50% ...IPv6 Subnet Calculator. A subnet is a division of an IP network (internet protocol suite), where an IP network is a set of communications protocols used on the Internet and other similar networks. It is commonly known as TCP/IP (Transmission Control Protocol/Internet Protocol). The act of dividing a network into at least two separate networks ...Access our free medical lab calculator formulas for converting relevant units ... amphotericin B, formic acid, Androstenedione ... Laboratory Analysis – Medical ...This application allows estimation of risks for trisomies 21, 18 and 13 at 11-13 weeks’ gestation by a combination of maternal age, fetal nuchal translucency thickness, fetal heart rate and maternal serum free ß-hCG and PAPP-A.Date Calculators. Duration Between Two Dates – Calculates number of days. Time and Date Duration – Calculate duration, with both date and time included. Date Calculator – Add or subtract days, months, years. Birthday Calculator – Find when you are 1 …4-5 weeks the HCG level is among 200-7000. 5-6 weeks the HCG level is among 200-32,000. 6-8 weeks the HCG level is among 4,000-150,000. 8-12 weeks the HCG level is among 64,000-210,000. 14 weeks the HCG level is among 14,000-62,000. 15 weeks the HCG level is among 12,000-70,000. 16 weeks the HCG level is among 9,000-56,000.The Pregnancy Calculator can estimate a pregnancy schedule based on the provided due date, last period date, ultrasound date, conception date, or IVF transfer date. ... While clinical blood tests are more accurate, and can detect exact amounts of the hormone hCG (which is only present during pregnancy) earlier and in smaller quantities, they ...Learning to use the right total resistance formula for the specific situation you're considering is all you need to calculate for a load resistor. Generally, series circuits are si...Doubling time calculator. Trouble with the calendar? Try this one. Date Time Beta; First beta Time: Beta: Second beta Time: Beta: Beta Charts: Doubling Times: Your Betas: …Approximate levels in early pregnancy. Weeks post LMP. 4 weeks 3 - 426 IU/L. 5 weeks 19 - 7340 IU/L. 6 weeks 1080 - 56500 IU/L. 10 weeks 54100 - 288000 IU/L. In the normal early pregnancy levels should rise by 65% each 48 hours, or 114% over 72 hours. B-hCG values generally peak during the first trimester and decline slowly through the ...Symptoms of miscarrying one twin, which is known as vanishing twin syndrome, include mild cramping, pain in the pelvic region, vaginal bleeding and a decrease in the level of human...

Human Chorionic Gonadotropin. Human chorionic gonadotropin (hCG) is a hormone produced by the placenta during pregnancy. It helps thicken a person’s uterine lining to support a growing embryo and tells the body to stop menstruation. HCG levels rise after conception and continue to rise until about 10 weeks in pregnancy.. Hyponatremia ncp

b hcg calculator

At around 11 weeks, the doubling time slows, and levels generally peak at 14 weeks. After this, you can expect hCG levels to decline. This shows generally accepted doubling times for a given base level of hCG. hCG under 1200 mIU/ml: 30 – 72 hours. hCG between 1200 -6000: 72 – 96 hours. hCG over 6000: over 96 hours.Sep 27, 2020 ... 27 yrs old Female asked about Beta HCG value is less than 1.2, 2 doctors answered this and 6319 people found it useful.This easy-to-use GPA calculator allows you to quickly calculate grades in college or high school, as well as calculate your class grades and final grade. After each calculation, you can download the table with the result in a pdf file. Use this GPA calculator on any device and completely free! Calculate College GPA. Other Calculators.Beta-hCG (bHCG or β-hCG) is a sex hormone found in the mother's blood serum that can be used to help interpret obstetric ultrasound findings. Beta-hCG levels may be used in three ways in the clinical setting of pregnancy: Outside the pregnancy setting, it may also be used quantitatively as a tumor marker, to aid in diagnosing a potentially ...The mean is the same as the average value of a data set and is found using a calculation. Add up all of the numbers and divide by the number of numbers in the data set. The median is the central number of a data set. Arrange data points from smallest to largest and locate the central number. This is the median.Having a job comes with costs: commuting, getting ready, de-compressing. Use this calculator to figure out your real hourly wage. Having a job comes with costs: commuting, getting ...(2016): The value of serum B-subunit of human chorionic gonadotropin level in prediction of treatment response to methotrexate in management of ectopic ...This hCG levels calculator determines doubling time and day increases based on two subsequent levels of β-hCG to assess viability of early intrauterine pregnancies.Workers are frequently given only pieces of information that concern net monthly income. Sometimes, that is not enough and you need to know your gross monthly income. To determine ... Related Ovulation Calculator | Conception Calculator. Pregnancy Term & Due Date. Pregnancy is a term used to describe a woman's state over a time period (~9 months) during which one or more offspring develops inside of a woman. Childbirth usually occurs approximately 38 weeks after conception, or about 40 weeks after the last menstrual period. Free β-hCG measurement. Date of measurement. This application allows estimation of risks for trisomies 21, 18 and 13 at 11-13 weeks’ gestation by a combination of maternal age, …Similarly to LH, FSH, and TSH, human chorionic gonadotropin (hCG) is a member of the glycoprotein family and consists of two subunits (α and β chains) that are associated to the intact hormone. 1-7 The α-chains in all four of these glycoprotein hormones are virtually identical, whereas the β-chains have greatly differing structures and are responsible for the respective specific hormonal ...The Dosage Calculation formula: The number of IUs of HCG divided by the number of mls of mixing solution will give you the dose strength per ml. The formula is applied below to the most commonly used amounts. Chart: 5,000 divided by 10 = 500 IUs per ml. Result: 500 IUs is the the strength of the HCG per ml.If your hCG level is higher than 25 mIU/ml you’ll get a positive pregnancy test . Since levels double every 48-72 hours in the first trimester, the hCG levels should continue to rise. Though the ranges below are not absolute, it’s a good reference point for a single pregnancy. (More on twins below!)An ectopic pregnancy is an extrauterine pregnancy. While the majority of ectopic pregnancies occur in the fallopian tube, nontubal sites include cervical, interstitial, ovarian, and abdominal pregnancy. Other abnormally implanted pregnancies, including hysterotomy (ie, cesarean, myomectomy) scar pregnancies can also occur.You can figure out your Hcg levels by using a hCG levels calculator. Absolute difference / First-hCG level x 100 = Percentage difference. Doubling time = log2 of the duration between tests in hours (First -hCG level / Second -hCG level) 2 (24 / Doubling time in hours) – 1) x 100 = one-day increase. The estimated due date (EDD or EDC) is the date that spontaneous onset of labor is expected to occur. The due date may be estimated by adding 280 days ( 9 months and 7 days) to the first day of the last menstrual period (LMP). This is the method used by "pregnancy wheels". The accuracy of the EDD derived by this method depends on accurate ... .

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