What is HCG?
Before we consider a table in which the hCG norm after the IVF is painted on days, let us say a few words about what this abbreviation means. Human chorionic gonadotropin is, in fact, a hormone that is produced with the onset of pregnancy. Synthesis of it is carried out already a few hours after the occurred fertilization.
By concentration of this substance in the blood, physicians can establish not only the fact of conception, but also determine the duration of gestation. It is the change in the level of hCG that is a symptom of complications of pregnancy.
What is the norm of hCG and how does it change on days after IVF?
The monitoring of the value of this indicator in dynamics is necessary for monitoring the development of gestation. So, depending on the period of pregnancy, there is a fluctuation of this hormone in the blood of the future mother.
To assess the growth rate of hCG concentration after IVF, doctors use the table.
As you can see from it, the greatest increase in the hormone is observed in the first month of pregnancy. Thus, hCG rises almost 2 times every 36-72 hours. The maximum values of this substance are observed at 11-12 weeks, after which the concentration of it begins to decrease smoothly.
In those cases when the decrease in the level of hCG occurs earlier than the prescribed time, doctors try to exclude complications of gestation, the most common of which in this case is the aging of the placenta. If there is a sharp decrease in the level of the hormone, then most likely it is a threatening abortion or the fading of pregnancy.
How to correctly use the table to calculate the level of hCG?
In order to correctly establish which hormone concentration should be at some time after pregnancy, it is necessary to know exactly the day of embryo transfer and also the fact that the embryo was placed in the uterus (3-day or 5).
To begin with, a woman should choose which embryo was transplanted into the uterus in her case. After that, you must go to the column that indicates the number of days that have elapsed since the date of the transfer. At the intersection, and will be the value of hCG concentration at a given time.
In those cases when the values obtained as a result of the analysis do not fall into the table norm, it is necessary to look into the adjacent column, which indicates the minimum and maximum values of hCG for this gestation period. If the result falls into this interval, then there are no reasons for concern.
In this case, it is worth considering the fact that when an ultrasound is found out that after ECO, 2 fetal eggs have taken root immediately and there will be twins, then in the assessment of hCG according to the table, an amendment is made for a multiple pregnancy. In such cases, the concentration of the hormone in the blood of the expectant mother is doubled.
If we talk about what day after IVF do the analysis for HCG, then this usually occurs on the 12-14 day after embryo landing in the uterus. The concentration of the hormone should be at least 100 mIU / l. In this case, we can say with certainty that the procedure of artificial insemination has been successful and the woman has every chance of becoming a mother in the near future.