B How much human chorionic gonadotropin is needed for pregnancy

Generally, if women want to know whether they are pregnant, they can use pregnancy test strips to test. In fact, there are other ways to check the situation in the hospital. For example: human chorionic gonadotropin, by testing its standard value, it is possible to determine whether pregnancy is present. Well, let’s take a look at how much β-human chorionic gonadotropin indicates pregnancy?

How much is the level of beta human chorionic gonadotropin for pregnancy

If the human chorionic gonadotropin level is higher than the standard value given on the test sheet, it means that you are pregnant. Different hospitals have different testing methods, so the standard values ​​on the test reports are also different. The standard values ​​of some hospitals are 0-5, so if the human chorionic gonadotropin exceeds 5, it means pregnancy. The standard value of some hospital outpatient clinics is 0-25, so if the human chorionic gonadotropin exceeds 25, it means pregnancy.

Human chorionic gonadotropin enters the maternal blood after fertilization and multiplies rapidly until the 8th week of pregnancy, then slowly decreases in concentration until the 18th to 20th week, and then remains there for a long time. Generally speaking, a level of human chorionic gonadotropin of at least 2.5 MoM is associated with Down syndrome. However, the actual human chorionic gonadotropin level in the maternal blood of DS patients is only 1.3 MoM on average, which cannot significantly distinguish DS patients. The human chorionic gonadotropin-related molecules used for DS testing include mineral acid b-hCG and high-sugar and high-calorie hCG (H-hCG).

What is the function of human chorionic gonadotropin

1. It has the functions of FSH and LH, maintains the service life of menstrual progesterone, and expands menstrual progesterone into pregnancy progesterone;

2. Promote the aromatization of androgen into estrogen and stimulate the production of progesterone;

3. Inhibit the stimulating effect of plant lectins on reticulocytes. Human chorionic gonadotropin can be adsorbed on the surface of trophoblast cells to prevent the trophoblast cells of test tube embryos from being attacked by the reticulocytes of pregnant mothers;

4. LH-like effect: before the fetal pituitary gland secretes LH, it stimulates the fetal testicles to secrete testosterone to promote male sexual division; it can also promote the development of sex hormones, and for men it can stimulate the activity of interstitial cells in the testicles and increase the secretion of androgen (testosterone). It is of great significance for the treatment of male patients with pituitary synergism. It can not only promote the growth of sex hormones and the secretion of androgens, but also promote the development of secondary sexual characteristics.

5. It can fuse with TSH protein kinase in somatic cells of pregnant mother's thyroid cysts and stimulate thyroid cyst specificity.

How much beta human chorionic gonadotropin is needed for pregnancy? Since the actual reference values ​​of each hospital clinic are different, it is recommended to consult the hospital clinic for inspection. In short, it is a very important test, and pregnant women are advised to pay great attention to the test results. If any abnormality occurs, communicate with the hospital immediately and take effective measures. In addition, pregnant women should do a good job of every prenatal check-up to prevent any abnormalities in the fetus and deal with them in time.