Blood on hCG. Rates of hCG. Blood test for pregnancy

Blood on the hCG can be rightfully called the method of early detection of pregnancy, because hCG, that is, human chorionic gonadotropin is a hormone that is produced by the female body only during pregnancy (except for the rare cases described below), hCG is also called a pregnancy hormone.

From the name it is clear that hCG is produced by the cells of the chorion, and they begin to be produced already on the sixth day after the fertilization of the egg, so the blood on hCG is a very common analysis due to the fact that it allows you to quickly and accurately determine the presence of pregnancy.

Functions of hCG



HCG plays a very important role in the first months of pregnancy, this role in stimulating the formation of the necessary hormones, such as progesterone, estrogen, etc., it should be noted that in the second trimester these hormones necessary for the normal development of pregnancy produce the placenta.

Blood test for hCG is performed by taking material from the vein. It is recommended to give blood in the morning, on an empty stomach. Be sure to tell your doctor about taking hormonal medications. HCG can be detected not only by blood analysis, but also by urine. It is HCG that determines the easiest way to detect pregnancy - the usual pregnancy test. The only difference is that the release of hCG in urine begins a little later than in the blood.

At the beginning of pregnancy, the level of hCG constantly increases, especially in the first trimester - the hCG level doubles every three days. The highest level of hCG in the blood is observed at 10-12 weeks of pregnancy, after which the indicator decreases slightly and comes to rest.

Rates of hCG



  • The first 2 weeks of pregnancy - 25-156 mU /ml

  • At the period from 2 to 3 weeks of pregnancy, the level of hCG in the blood can be 101-4870 mU /ml

  • The period of 3-4 weeks is 1110-31500 mU /ml

  • From 4 to 5 weeks of pregnancy, the level of hCG in the norm 2560-82300 mU /ml

  • 5-6 weeks of pregnancy - 23100-151000 mU /ml

  • At a period of 6 to 7 weeks - 27300-233000 mU /ml

  • At the end of the first trimester, that is, from 7 to 11 weeks, the level of hCG in the blood ranges from 20900 and can reach 291000 mU /ml

  • From 11 to 16 weeks of pregnancy - 6140-103000 mU /ml

  • From 16 to 21 - 4720-80100

  • The second half of pregnancy, namely, from 21 to 39 weeks of pregnancy, the level of hCG in the blood is stable and reaches 2700-78100 mU /ml.


  • An increase in hCG during pregnancy can be observed in the following cases:

  • Multiple pregnancy

  • Toxicosis

  • Gestosis

  • Diabetes mellitus

  • Pathology of fetal development


  • The level of hCG can be increased in the absence of pregnancy and even in men. In which cases?

  • Tumor processes

  • The bubble drift

  • Chorion carcinoma

  • Preparations of hCG

  • A recent abortion (less than a week), however, a high blood level after a mini-abortion testifies the continuation of the development of pregnancy.


  • Low levels of hCG during pregnancy may indicate the following:

  • Incorrect staging of gestation

  • Development of ectopic pregnancy

  • Non-developing pregnancy

  • Delays in fetal development

  • Threat of miscarriage

  • Placental insufficiency

  • Overpopulation of pregnancy

  • Fetal death (after 12 weeks of pregnancy).