Here we get view about HGC levels and their role in pregnancy:

hcg levels during pregnancy

If you have been on a successful roll with weight loss on the HCG diet, you’ve probably been pondering the qualities of this amazing hormone, Human Chorionic Gonadotropin (HCG) and what it does for the body.  Studies have connected it with fertility because it regulates the production of estrogen and has a direct effect on how often women ovulate.  In fact, HCG injections in low doses has been utilized to treat infertility in women by stimulating the ovaries.  (Interesting side note: HCG has also been employed to help men with the issue of low sperm count due to its effect on testosterone production.)  Although this hormone is found in very low, almost undetectable levels in both men and women, it is more prevalent in very abundant levels in women who are pregnant.  This hormone plays a vital role in protecting the developing embryo in many different ways.  Its levels increase at conception and throughout the stages of pregnancy due to its production by the placenta.  HCG’S primary purpose is to first send messages to the endometrium to prepare for the fertilized egg, and then, during molar pregnancy, it acts as protection for the developing baby because it sends out even more messages to the mother’s immune system that prevents it from treating the developing baby as if it were a foreign antigen trying to invade the body.  Therefore, when a pregnant woman possesses the “normal” levels of HCG (which is relative to every woman since everyone’s body is different), this substance prevents miscarriage and ensures a full-term pregnancy—ideally in most cases. So in early pregnancy, hcg levels should be checked by clear blue pregnancy test and also see that hcg urine pregnancy test results are also seen by the doctor.

Considering the important role this hormone plays in pregnancy and embryonic development, closely examining the levels for each stage, along with symptoms and effects can be quite interesting and enlightening.  These aspects might also shed some more light on how a women’s body handles surges and then sudden decreases of the HCG.

How to test HCG to detect pregnancy:

Under normal circumstances, women of child-bearing age, have levels of HCG that can range from 0 or undetectable to less than five, which would indicate a negative result for pregnancy in a blood test. (That low of a level would not be detected in a urine test, in other words.)  Anything above 25 MIU’s/ml shows that a woman is indeed pregnant.   On the other hand, a positive result on a urine test, including those of the newer brands of home test kits, would occur at about a week after the first missed period; though sometimes, the likelihood of gaining a more accurate result might mean waiting a bit longer.  On average, HCG starts circulating through the bloodstream within days of implantation of the fertilized egg because the rapid development of the placenta, which emits HCG.  Nonetheless, obstetricians/gynecologists always order a blood screening to be certain.

As mentioned, HCG protects the developing embryo from the time of the egg’s fertilization.  So just beyond the early stages of embryonic development, what else does this hormone do?  Specifically, HCG prevent the corpus luteum (a protective gland that surrounds the ovary and produces progesterone) from shedding so that it can continue to produce progesterone, which helps with implantation because it sends a message to the uterus not extract the endometrial lining.  At the same time, HCG also regulates how this uterine lining reshapes itself and prepares to accept the fertilized egg, as well as increases blood supply to this newly formed embryo.

From that point on, the level of HCG doubles every 48 to72 hours.  You might wonder how its production is controlled, consider its rapid release.  HCG levels do reach the highest peak right around six weeks; however, they level out and then, start to drop off, though they are still detectable for the entire duration of the pregnancy.  This happens because the placenta becomes well-established around twelve weeks of gestation and takes over, for the most part, the production of progesterone.  Thus, HCG is no longer necessary for ovarian function.  Also, more possibilities are being closely researched as to whether or not HCG holds additional benefits or functions during the latter part of the second trimester and going into the third.  That remains to be seen.

Information of hcg levels from early pregnancy:

hcg levels from early pregnancy

The following information is a general reference of “normal” levels of HCG throughout the stages of pregnancy.  They can vary from person to person and might even hcg rise as a result of complications or a multiple pregnancy such as ectopic pregnancy.  A decrease or consistently low levels during the first trimester and early second trimester could also signal complications.

  • Three weeks: 5 to 50 MIU/ml
  • Five weeks: 18 to 17,340 MIU/ml
  • Seven to eight weeks: 76,590 to 229,000 MIU/ml
  • Nine to twelve weeks: 25,700 to 288,000 MIU/ml
  • Thirteen to sixteen weeks: 13,300 to 254,000 MIU/ml
  • Seventeen to twenty-four weeks: 4060 to 165,400 MIU/ml
  • Twenty-five to forty weeks: 3640 to 117,000 MIU/ml

Normally, a positive sign on a home pregnancy test is the first indicator of HCG in the body’s system at twelve to fourteen days after conception.  This, however, does not measure the level of HCG.  For an accurate account of levels and part of a routine check-up, an obstetrician will order a blood test.  This type of test can accurately track how much HCG is in the bloodstream and to ensure that there is not a sudden change in levels. There might be a ectopic pregnancy as hcg levels rise.If a change occurs, then the doctor will order a second and even a third to compare results and to get a clear picture of what exactly is happening with the pregnancy—whether there’s a possibility of miscarriage if levels are too low or decrease dramatically or if there could possibly be multiple embryos if levels are rather slow rising hcg levels.  Nonetheless, you would have to take care not to read too much into the numbers because normal pregnancies have been known to occur even with seemingly low levels.  (Remember that everyone’s body chemistry is different.)  When carrying a female baby, HCG levels tend to be a bit higher than for a male child.  In any case, an ultrasound would be the next step to confirm and diagnose any conditions or complications, and from there, additional monitoring of HCG levels might be necessary.  As with any question or concern, the best step to take is to contact your OB/Gyn. or present at the local emergency room.

Finally, to answer the question, HCG levels have tendency to revert back to five down to undetectable just a few days (24 to 72 hours) after giving birth.  This usually explains some of the postpartum physical and emotional changes a woman undergoes.  For some women, this process might even take one to two weeks, but anything beyond that time span might warrant another visit with your healthcare provider.