HCG Levels by Week


HCG, also known as Human Chorionic Gonadotropin is a hormone which lies within the blood and urine of woman. Human Chorionic Gonadotropin is a hormone that is used to determine whether or not a woman is pregnant. Once conception occurs and the fertilized egg implants itself into a woman’s uterus, the HCG hormone begins to produce through the rudimentary placenta. In order for a woman to receive a positive pregnancy test, it is imperative that implantation occur in addition to production of Human Chorionic Gonadotropin.

Below is a chart which provides the various HCG levels during pregnancy. Please note that these numbers are GUIDELINE, as the HCG levels will vary as well as rise and fall differently depending on the woman.

Guidelines for HCG Levels by Week which will indicate the LMP (Last Menstrual Period) of a woman and the mIU/ml (milli Internetational Units per milli Liter) of the HCG levels.

Women may have many questions in regards to HCG levels and what they may indicate. If a woman has a lower HCG level, there could be a variety of reasons for it. It is imperative that a woman be checked by her physician to see why/how the levels are changing. A low HCG level may present the matter of a possible an error in the calculation of a pregnancy, miscarriage, an ectopic pregnancy, or dehydration. Additionally, a high HCG level may determine an error in the calculation of a pregnancy or a possible multiple pregnancy for a woman. In a normal pregnancy, HCG levels will start to plateau and eventually decline as a woman becomes closer to the end of her pregnancy. It is for that specific reason that many physicians do not check HCG levels during this time, as numbers will vary from pregnancy to pregnancy unless a woman has signs of a possible problem or issue. If a woman experiences a miscarriage, her HCG levels will take some time to return to normal. After such an occurrence, a physician will check the woman’s HCG levels to determine if the levels have returned to normal. In most cases, medications, for example, antibiotics, birth control, or pain relievers should not affect a woman’s HCG levels. In some cases, however, medications which are used in fertility treatments or other medications that contain the HCG hormone may alter these levels. If you should have any questions, it is important to consult your physician prior to using these medications.


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