Diagnosis of the course of pregnancy is extremely necessary. For its implementation, you can buy a test, which is sold in a pharmacy. He will be able to give an answer about the presence of yellow bodies during the analysis of urine.
However, the test does not always give an accurate result. More accurate information can be obtained if you pass a blood test for the human hormone chorionic gonadotropin hormone. The interpretation of its value is made on special equipment, so it will not work at home.
About hCG in general
A pregnancy test may not always determine its availability, especially at the earliest possible date. To determine pregnancy, a blood test is the most reliable source of necessary information. This is due to the fact that during the conception period, the hormonal balance changes in the female body. Initially, this is the appearance of a shell around the cell, which begins to produce the hCG hormone.
There are cases when the general test does not show the presence of pregnancy, but the blood test makes it possible to reliably establish the value of the hormone level of hCG and thereby determine the probability of conception already for a period of 5 days after fertilization of the oocyte. In addition, beta-hCG hormone is an indicator for finding out whether there is an abnormal fetal development, identifying a threat of miscarriage and establishing an exact pregnancy period.
We donate blood for the
study. 7-10 days after the fertilization of the oocyte, the amount of the hormone in the blood increases by no more than 5 units. The precisely established day in which conception could occur will make it possible to make an analysis with confidence two weeks later. The reverse situation indicates the need to reassign the test 21 days after the end of menstruation. There are times when it has to be repeated in a few days.
After the onset of conception, the level of the hormone in the body of a woman will all the time rise. If pregnancy has not occurred, then there is a reverse picture - a decrease in the level of the hormone.
Decoding of the results of the analysis
The human chorionic gonadotropin hormone after conception of the oocyte will grow to a period of 13 weeks, after the onset of this period it will gradually begin to decline.
As the results of clinical trials in 2012 show, which were conducted in 95 laboratories using Hoffman Roslie's reagents, the norms of the human chorionic gonadotropin hormone should be within the following parameters:
These results of the studies given in the table are purely indicative,, as well as the test. This indicator may deviate slightly from the norm and this will not be a cause for alarm.
Detailed examination and quantification of beta-level hormone in the blood should be done in the first trimester and again in the second. In this case, the tables allow the doctor to assess the level of this component and determine the deviations in the development of the fetus.
| Pregnancy Week | b-hCG, ng / mL |
| 9 | 23.6-193.1 |
| 10 | 25.8-181.6 |
| 11 | 17.4-130.4 |
| 12 | 13.4-128.5 |
| 13 | 14.2-114,7 |
Standard beta-hormone in first trimester
| Pregnancy Week | b-hCG, ng / mL |
| 14 | 8.9-79.4 |
| 15 | 5.87-62.0 |
| 16 | 4.67-50.0 |
| 17 | 3.33-42.8 |
| 18 | 3.84-33.3 |
Standard beta-hormone in first trimester
Moreover, the results of the tests will be observed by a doctor who can understand and analyze the dynamics of this indicator.
Human hormone chorionic gonadotropin hormone is the indicator that in the first trimester will identify and eliminate the threat of miscarriage or if you suspect a frozen / ectopic pregnancy. Since pelvic ultrasound is not recommended every week, a blood test for hCG is an alternative and harmless option for both mother and baby.
Getting ready for the
study In hospitals, blood samples for the hormone are taken from the vein. Before this procedure for 8-10 hours you can not not drink, do not eat. During the course of pregnancy it is impossible to live a sexual life, to give up considerable physical exertion.
When using medication before blood donation, you should notify the doctor who is watching you. The study may be significantly influenced by those drugs that contain the hormone of human chorionic gonadotropin.
This is a prerequisite for the research. Violation of this condition at the root may distort the results of the study.
Decoding of the level of the hormone
If the content of HCG is significantly lower than normal, this may indicate:
- the occurrence of complications in conception associated with the fertilization of the ovum outside the uterine cavity;
- fading of the fetus;
- the possibility of miscarriage;
- failure of the period of bearing;
- abnormalities in the structure of the embryonic organ;
- the presence of chromosomal pathology.
Only the experienced doctor will be able to decipher the research answers.
If there is an ectopic pregnancy, the egg may be in the abdominal cavity or the subordinate tubes of the uterus. This means that there are no conditions for the normal development of the fetus and speaks of serious anomalies.
Invitro-decoding will show at the beginning of wear a lowered by 4 units of the hormone level, and at 5 weeks, this rate will drop sharply. In this case, one study will not be enough, you need to make an ultrasound.
When the fetus fades, the hormone is contained too in small doses, which can additionally be accompanied by a toxicosis process.
To reveal the genome pathologies of the embryo at early stages, namely in the first and second trimester, a number of other additional examinations are carried out. This allows you to quickly identify abnormalities.
With an obviously high hormone index, it is possible to judge the presence of pathological development of the fetus. However, in this case, the doctor may additionally assign an analysis followed by its interpretation. The reason for a rather high level of hCG may indicate the presence of several embryos in the body of a woman. In the period of severe toxicosis, an increase in the level of this hormone is also observed.
A high rate in men is observed with diabetes or gestosis. This situation can indicate the presence of internal bleeding in the body. Therefore, one study will clearly not be enough. To exclude the possibility of error, any study can be re-assigned.
The reason for the erroneous study to determine the hormone of human chorionic gonadotropin can be:
- failure to comply with the rules for delivery and collection of source material;
- assumption of error in the determination of the period;
- violation of ovulation;
- abnormal embryo fixation.
The level of a hormone in the body of a woman can be changed also after abortion or after a miscarriage. Incorrectly performed operation, which indicates unskilled treatment of the uterine cavity. This may be the cause of an elevated level of the human chorionic gonadotropin hormone. It will take a second operation.
After 7 weeks, this indicator comes back to normal. The reverse situation suggests that you should consult a doctor and conduct a series of repeated examinations that will identify the cause of this increase.
In menopause or menopause, some women may have an elevated content of this hormone even for several dozen units. Correct this situation, drugs that allow to regulate this indicator to the level of normal.
