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Subscribe to our week-by-week Pregnancy Newsletter. What week is your pregnancy in? For example, a woman with six-week menstrual cycles should fall roughly in the same range as a woman with four-week menstrual cycles. In other words, at eight weeks after her last menstrual period she should fall roughly in the same range as a woman with four-week menstrual cycles would at four weeks.
In instances where a first hCG measurement is lower than expected, or when there is cause to worry about miscarriage due to previous loss or other symptoms, a second test will most likely be ordered. When there is a decline in the level of hCG from the first test to the second test, this often means a miscarriage may take place, also known as impending miscarriage.
If you are concerned about your hCG levels, you should direct your questions to your physician. Try not to read too much into any single measurement. Get diet and wellness tips to help your kids stay healthy and happy.
Cole LA. The hCG assay or pregnancy test. Clin Chem Lab Med. Human chorionic gonadotropin in pregnancy diagnostics. Clinica Chimica Acta. Seeber BE. What serial hCG can tell you, and cannot tell you, about an early pregnancy.
Fertil Steril. American Pregnancy Association. Terminology for pregnancy loss prior to viability: a consensus statement from the ESHRE early pregnancy special interest group. Hum Reprod. It can be detected early in pregnancy through a blood test or a home pregnancy test. During early pregnancy, hCG levels typically double every two to three days.
HCG levels in pregnancy vary widely, so it's more helpful to look for an upward trend rather than a specific number. Low or declining hCG levels can signal a problem with the pregnancy, such as an impending miscarriage or ectopic pregnancy. HCG is a hormone produced during pregnancy. The letters stand for human Chorionic Gonadotropin. After an egg is fertilized and implants in the uterus, the cells that will eventually form the placenta start making hCG. HCG is often the first indicator of pregnancy.
The hormone can be detected through a blood test about 11 days after conception. However, most women first discover they're pregnant using a store-bought home pregnancy test, which measures hCG levels in the urine. HCG is detectable in urine at around 12 to 14 days after conception. In early pregnancy, hCG levels typically double about every two to three days. Levels generally peak at around 8 to 14 weeks after conception. After that they decline somewhat, and usually plateau during the second and third trimester.
Your hCG levels at any particular point in time during pregnancy don't mean much. Although there are average ranges of hCG levels for different stages of pregnancy, these can vary dramatically from woman to woman, and from pregnancy to pregnancy.
Even if your hCG levels are outside the "normal" range, you can still have a perfectly healthy pregnancy and baby. That said, it is important that your hCG levels increase during early pregnancy.
If your hCG levels don't continue to rise rapidly during the first few weeks or if they start to drop, this can signal a problem such as an ectopic pregnancy or miscarriage.
Higher-than-typical hCG levels can signal that you're carrying multiples or, in rare cases, have a molar pregnancy. Often, you won't know what your hCG levels are during pregnancy. Home pregnancy tests don't give a specific hCG number. However, you may learn your hCG levels if your provider orders a blood test to confirm your pregnancy or as part of a screening test. Your provider may also order a series of two or more hCG blood tests if he or she has concerns about how your pregnancy is progressing.
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