Dynamics of development of pregnancy according to the results of analyzes on hCG.
Contents of
- What is HCG?When to do the test?
- HCG blood test - transcript: table
- HCG norm on days from conception
- How hCG grows during pregnancy
- hCG in frozen pregnancy
- hCG in ectopic pregnancy
- hCG daily in case of double
- hCG after ovulation
- hCG after IVF
- Video: analysisblood on HCG
- Our medicine requires patients to take a lot of different tests to determine the health or ill health
- Several decades ago, we were surprised at the ability of doctors to immediately talk about the absence /
- Now with the development of Internet resources, access to the study of material associated with the appointment and interpretation of a variety of tests and analyzes is open
- We can in detail or superficially read it and ask questions to doctors. Although they do not like the last moment, and sometimes it irritates
. What is HCG?When to do the test?
Human chorionic gonadotropin, or abbreviated as hCG, is a specific hormone that is produced in the body in the presence of abnormal growth of the cells of the reproductive system.
The most common use of it is to determine the fact and duration of pregnancy. Women are also tested for the amount of hCG:
- for understanding how the baby develops in the womb of
- in case of suspected
- tumors to assess the quality of the artificially aborted
- in the presence of threatening miscarriage.
Men are assigned an analysis to determine the absence / presence of testicular tumors.
hCG consists of 2 elements:
- alpha particles
- beta particles
By the number of beta-hCG in the blood in the laboratory, the presence of pregnancy is established or vice versa - its absence.
When a woman is in an interesting position, then the production of hCG is responsible for the chorion - the envelope of the fetus. It regulates the growth and development of the future baby in the body of the mother until the placenta is formed, which these functions will take over.
Chorionic gonadotropin also regulates the hormonal background of a pregnant woman. It controls and stimulates:
- Progesterone hormone production, estrogen
- Yellow body work in the ovaries
- Normal development of the baby in the womb in the womb in the first trimester
Nausea, which plagues many women at the beginning of pregnancy, is manifested due to an increase in the concentration of hCG in the body.
Chorionic gonadotropin is already detected in the blood through:
- a week after the fertilization of
- a couple of days after the delay of the monthly
In the urine, it manifests a couple of days later.
It should be noted that all pharmacy tests for pregnancy show an increased concentration of hCG or lack thereof.
Blood test for hCG - interpretation: table
- If you were prescribed to donate blood to HCG, then do it in the morning on an empty stomach
- The unit of hCG change is mIU / ml - milI international unit per mililitr. In the body of non-pregnant women, the index of chorionic gonadotropin ranges from 0 to 5 mIU / ml
- . Since the attachment of the fetal egg to the uterine wall, the female body begins to increase the production of the chorionic gonadotropin. On average, its number doubles every day or three.
- This trend persists until the 9-11 weeks of pregnancy. Then the indicator is reduced and fixed at a specific level
Approximately the dynamics of changes in the amount of hCG in the body of a pregnant woman is as follows:
HCG rates for weeks. Table
Indicator( from date of last menstruation) | Minimum | Maximum |
Non-pregnant women | 0 | 5.2 |
Pregnancy | ||
3 - 4 weeks. | 15 | 157 |
4 - 5 weeks. | 102 | 4871 |
5 - 6 weeks. | 1111 | 31502 |
6 - 7 weeks. | 2561 | 82302 |
7 - 8 weeks. | 23101 | 151002 |
8 - 9 weeks. | 27301 | 233002 |
9 - 13 weeks. | 20901 | 291002 |
13 - 18 weeks. | 6141 | 103002 |
18 - 23 weeks. | 4721 | 80102 |
23 - 41 weeks. | 2701 | 78102 |
Note that the work of the organism of each particular woman is very individual, so check the results with the specialist who is watching you.
HCG norm on days from conception
- Each laboratory has its own standards and norms for decoding the tests, including HCG in the blood
- On the other hand, due to the difference in the calculation of the gestational age, there may also be differences in theobtained results of the concentration of chorionic gonadotropin
- Obstetric period is always more embryonic, since it is counted from the first day of the last menstruation
HCG norm on days from conception. Table
The date after conception( ovulation), days | Min. | Max. |
7 | 2 | 11 |
8 | 3 | 19 |
9 | 5 | 22 |
10 | 8 | 27 |
11 | 10 | 46 |
12 | 16 | 66 |
13 | 21 | 106 |
14 | 28 | 171 |
15 | 38 | 271 |
16 | 67 | 401 |
17 | 121 | 581 |
18 | 221 | 841 |
19 | 371 | 1301 |
20 | 521 | 2001 |
21 | 751 | 3101 |
22 | 1051 | 4901 |
23 | 1401 | 6201 |
24 | 1831 | 7801 |
25 | 2401 | 9801 |
26 | 4201 | 15601 |
27 | 5401 | 19501 |
28 | 7101 | 27301 |
29 | 8801 | 33001 |
30 | 10501 | 40001 |
31 | 11501 | 60001 |
32 | 12801 | 63001 |
33 | 14001 | 68001 |
34 | 15501 | 70001 |
35 | 17001 | 74001 |
36 | 19001 | 78001 |
37 | 20501 | 83001 |
38 | 22001 | 87001 |
39 | 23001 | 93001 |
40 | 25001 | 108001 |
41 | 26501 | 117001 |
42 | 28001 | 128001 |
How the hCG grows during pregnancy
- Chorionic gonadotropin protects the fetus from attacks of the mother's body. The latter in the first days and weeks perceives the first as a foreign body and tries to get rid of it, push out
- Because HCG affects the areas of the brain that depress the immune system of the pregnant woman. At the same time, this hormone takes control of the production of those substances that the embryo needs for the successful development and life of
- . Such a responsible mission of hCG is accompanied by its doubling every one and a half - two days after 5-7 days after conception. The dynamics of doubling persists up to 10-11 weeks of pregnancy. After the rate decreases to a certain point and remains until the end of pregnancy
From the tables above, it is clearly visible in the numerical values of the change in the concentration of chorionic gonadotropin.
hCG in the case of a dead pregnancy
- Pregnancy fading occurs more often in the first trimester, rarely at later periods
- Because the fetal egg remains attached to the uterine wall for some time, hCG is produced. Its concentration increases slightly until the embryo detachment and its release
hCG in the ectopic pregnancy
- The embryo envelope in the ectopic pregnancy produces the hormone gonadotropin in a much smaller amount than with the normal location in the uterus
- Doubling dynamics every 2-3 days you will not see. Nevertheless, the increase in the level of hCG persists, only at a much slower rate of
- . Occasionally, an increase in the concentration of the chorionic gonadotropin has a negative tendency. That is, instead of growth, there is a clear slight decrease in
hCG by day in the case of a double
- . Do you hold the results of the analysis on hCG and see that the indices oscillate around 5 mIU / ml? So, the pregnancy has not yet occurred or you hurried with the research of
- . If you compare the dynamics of the chorionic gonadotropin change with the table of its increase and see that for a particular week your data is more than twice, the probability of multiple pregnancy
- is high. Due to HCG data you can be diagnosed with a doublemuch earlier than the US-
- analysis. Approximate figures for the change in the amount of hCG in the blood in multiple pregnancy, see the table below. The starting point is selected first day of the last menstrual period
Table
Days Mean Range | ||
28 | 64.7 | 9.5 -120 |
33 | 1,500 | 200 - 1.800 |
36 | 19.200 2.400 - 36.000 | |
40 | 58.344 8.700 - 108.000 | |
45 | 126.000 72.000 - 180.000 414.000 | |
70 | 348.000 -480,000 |
hCG after ovulation
- On the third day after ovulation fertilization of the oocyte takes place. From this moment, the envelope of the fetal egg begins to produce chorionic gonadotropin, gradually increasing its concentration in the body of the woman.
- Pharmacy pregnancy tests can "feel" hCG in the urine when it is equal to or greater than 25 mIU / ml. That is, approximately 13-14 days after ovulation, or after 2-3 days of delaying menstruation. In this case, the pharmacy test will show you a weak second stripe of the
- . In turn, a blood test for HCG will give a more reliable result, since it is able to catch a pregnancy hormone in a concentration of 5 mIU / ml. Therefore, the first time you can give blood, you can a week after ovulation and repeat the procedure after 2-3 days
hCG after IVF
If, during a natural pregnancy, it is enough to pass several tests for HCG, then after ECO regular monitoring of the concentration of chorionic gonadotropin is the key to the success of the procedure and a good development of pregnancy.
To implement IVF doctors use embryos:
- three-day
- five-day
- Therefore, the amount of hCG in the body of a pregnant woman is slightly different. For example, after the implantation of a three-day embryo, the pregnancy hormone has slightly higher values than the five-day
- . The tables of norms and ranges of hCG values after embryo transfer by the IVF method are easily found in the Runet open spaces, as well as in the doctor who performed the procedure
- . If you successfully completed the IVF procedure, be ready for the first two weeks to constantly monitor your condition. Once the level of the chorionic gonadotropin reaches 100 mIU / ml, you can be congratulated on the pregnancy