Beta-hCG: the norm during pregnancy

With the onset of pregnancy, expectant motherit is necessary to pass a lot of research and to pass many analyzes. Most often, women are prescribed a general examination of urine and blood. However, the results of such diagnostics can not confirm or disprove a new interesting situation. In this article we will talk about beta-hCG. You will find out what kind of substance and for what it is formed. It is also worth mentioning at what time it is necessary to take an analysis of beta-hCG. In medicine, there are generally accepted norms of this substance in the blood of a woman in different periods of pregnancy.

Beta-hCG

This substance is released by a fetal egg andthe placenta. It appears in the blood of the expectant mother the very next day after implantation. In this case, the usual pregnancy tests show still a negative result. All because of the fact that in the urine the amount of beta-hCG is much less than in the blood. That's why, if you want to quickly find out about the pregnancy, it's worth giving a blood test.

With an increase in the period of pregnancy, there is an increase in the level of beta-hCG. Its maximum reaches this hormone at the end of the first trimester.

When should I take an analysis for the determination of beta-hCG during pregnancy?

The research can be carried out several times forthe entire period of bearing the baby. Usually such an analysis is prescribed at the very beginning of pregnancy. At this stage, it helps to confirm the woman's new position and set an approximate time limit. Most often, the study is conducted in dynamics.

After this, at the end of the first trimestera blood test for the determination of beta-hCG. 12 weeks is the ideal time for such research. The result of the analysis allows you to determine the possible risks of development of intrauterine pathology. In this case, the ultrasound data must be taken into account.

The next term, on which the analysis is carried out,is the period from the 16th to the 18th week. Most often, this diagnosis is carried out in those women who received a bad result of the first screening. If necessary, the determination of the level of the hormone can be carried out until the very end of pregnancy.

Are there norms?

The norm of this substance in the blood of women,of course, there is. It is worth noting that much depends on the period, the number of fruits and medications taken. Thus, some medicines may affect the result, for example, "Horagon" or "Pregnil". In addition, the level of the hormone while waiting for the baby grows in proportion to the number of fruits in the uterus. With such pathologies as ectopic pregnancy, bladder skidding or a stop in the development of the fetus, this substance in the woman's blood decreases. Let's consider, what at beta-hCG norm or rate at different terms vynashivanija the kid.

First trimester

Approximately up to six weeks of pregnancy, the hormone level doubles every 48 hours. After this (until the eighth week), the substance doubles every three days. Further, the increase in units is on a decline.

In the first two weeks of pregnancy there is no sensecarry out this study, since the egg only ripens and prepares for fertilization. In the period from the third to the fourth week in the blood of the future mother can be found from 16 to 156 units of substance. Further, before the fifth week, no more than 4870 IU / ml is released.

The fifth and sixth weeks are characterized by the numberof the hormone from 1110 to 31500 units. At a period of six and seven weeks, it is possible to detect 2560-82 300 IU / ml. Seventh and eighth are characterized by the amount of the hormone from 2310 to 151,000 units in a milliliter of blood. During the eighth to ninth week, 27 300-233 000 IU / ml is found.

The ninth, tenth, eleventh and twelfthare determined by the level of the hormone from 20 900 to 29 100 units. Beta-hCG (the norm of 12 weeks) does not exceed the amount of 30,000 IU / ml. Otherwise, it can be a serious violation in the development of the baby.

Second trimester

At this stage, the level of substance in the blood beginsgradually decline. However, in some cases, it can remain in the same amount or be higher than normal. Most often this is observed in multiple pregnancies or during the administration of drugs containing chorionic gonadotropin.

Between the thirteenth and eighteenth week inthe blood of a future mother can observe a range of this hormone ranging from 6140 to 103,000 units. After this (approximately until the 24th week of embryo development), the level of chorionic gonadotropin is 4720-80 100 IU / ml.

Third trimester

At this stage, very rarely a measurement is madelevel of a hormone. However, there are generally accepted norms that are guided by the need for research. So, in the period from the 23rd to the 40th week, 2700-78 100 units of substance are found in the blood of the expectant mother.

Remember that with multiple pregnancies, the amount of chorionic gonadotropin can be slightly higher.

Possible pathologies

Is there a certain rate of beta-hCG for possiblepathologies? Unfortunately, medicine has not yet established certain data. All because the pathology can begin at different times and under different conditions. Also the organism of each future mother is individual and can not equally respond to possible difficulties.

• In biochemical pregnancy, the level of the hormone reaches its normal level up to a certain week (usually 5-6th). After this, a sharp drop in the substance occurs, and the analysis shows negative values.
• Ectopic pregnancy is characterized by the fact that the rate of beta-hCG is not achieved. The level of the hormone is growing, but very slowly and significantly behind the established values.
• The values ​​of the hCG level greatly exceed the norm with a bubble drift. At the same time, an embryo with a heartbeat is not detected during ultrasound.
• If the future mother suffers from diabetes, then the amount of beta-hCG may also exceed normal values.

Can normal pregnancy not comply with the established norms of hCG?

It also happens that the fetus develops perfectly normal, but the amount of chorionic gonadotropin in the woman's blood is much higher or lower than normal. Why is this happening?

Most often, this situation arises at the veryinitial terms. However, a woman can not exactly name the date of conception. If the gestational age is not set correctly, then the hormone levels may differ from the established norms. Most often the situation helps to clarify ultrasound diagnosis. During ultrasound, the doctor can accurately determine the duration of pregnancy (up to one day).

Summing up and concluding an article

So, you now know which normschorionic gonadotropin are allowed during pregnancy. Remember that you should not rely heavily on fixed figures. The organism of each woman is individual and can react differently to a new situation. Do not take into account those figures that were on those or other terms for your girlfriends. Some doctors say that the level of beta-hCG may vary depending on the sex of the unborn child.

If you got a bad result, it's worthrepeat the analysis. Often there is a laboratory error or an incorrect comparison with the standards. When decrypting data, always pay attention to the established values ​​of the research center. They can be very different from other laboratories. Also, the result can be displayed in different units. All this strongly affects the values ​​obtained. To clarify the situation, please contact your gynecologist and follow all the appointment data. Easy you pregnancy!