The blood test for pregnancy - what it can tell us about?
How do you know about the ensuing pregnancy?Of course, the woman is not regular menstruation, however, during the first 12 weeks of pregnancy may be periodic neobilnye spotting Spotting - it is important to rule out pathology , which is sometimes mistaken for a month.It can enter the woman astray.And exactly to answer this question can only be a blood test for pregnancy.
After conception (usually a week) in the blood and urine of women appears human chorionic gonadotropin.This hormone is called the pregnancy hormone as pregnancy without his body should not be.However, it is found in humans (in both women and men) in some diseases.
chorionic gonadotropin outer shell of the embryo develops with naps (chorion), which are tightly embedded in the wall of the uterus.And as the fertilized egg enters the uterus week after conception, the human chorionic gonadotropin, and begins to produce from that time.
Once chorionic gonadotropin appears in the blood, it activates the function of the corpus luteum (a gland that is formed in the ovary at the site exit from the egg and all the time allocated the female sex hormone progesterone).The high activity of the corpus luteum in the blood causes a large amount of progesterone Progesterone - norm and pathology , which supports the pregnancy during the first twelve weeks, not allowing the uterus to contract, that is, preventing a miscarriage Miscarriage - whether it can be insured? .
Since the first and up to 11-12 weeks of pregnancy, the number of human chorionic gonadotropin in the blood and urine of women doubled every two days.But thereafter chorionic gonadotropin first increases to a lesser rate, and then the amount in the blood is gradually reduced.This happens because the job replaces the corpus luteum new body - the placenta.
Human chorionic gonadotropin is the most accurate indicator pointing to the pregnancy.In addition, its planned growth within the first twelve weeks suggests that the pregnancy develops correctly.
now found that Human Chorionic Gonadotropin consists of two substances - alpha and beta.Substance Alpha is fully consistent with the same substance pituitary hormones involved in conception and pregnancy, substance is a beta characteristic only of human chorionic gonadotropin.
How to get tested properly?
today issued various pregnancy tests, based on the rapid determination of the amount of human chorionic gonadotropin in urine.But a more accurate study can be done by making a blood test for pregnancy.This reveals human chorionic gonadotropin in the blood.It defined as the total of its content, and the beta substance, which is a more accurate diagnosis of pregnancy.
In order to properly take a blood test for human chorionic gonadotropin, you need to know:
- analysis shall chime from a vein on an empty stomach, preferably the night before to eat only a light dinner;
- if the analysis does not give up in the morning, then you should know that after a meal should take at least four hours;
- analysis is carried out five days after a missed period;as in the early days of the amount of human chorionic gonadotropin in the blood of a minor, the analysis can be repeated after a few days;
- welcome all drugs should be either canceled or agree with the obstetrician-gynecologist;
- not take alcoholic beverages and smoking;
- to get an accurate analysis, on the eve of the study should not be strenuous exercise and stress;
- before taking the analysis of human chorionic gonadotropin need to rest (sit quietly) about 10-20 minutes;
- not give blood for analysis immediately after any medical procedure.
What else can say a pregnancy test
If the amount of human chorionic gonadotropin below normal for this stage of pregnancy, it may indicate an ectopic pregnancy (the attachment of the ovum in the uterus is not, and elsewhereFor example, in the fallopian tube).This is a very dangerous condition and better to know about it in advance to remove the fertilized egg from the pipe by means of routine endoscopic surgery, which is carried out using a special optical equipment and is low-impact.If you do not know about ectopic pregnancy can occur rupture of the fallopian tube growing fetus.This will already require emergency surgery, during which the fallopian tube is removed.
number of human chorionic gonadotropin above normal may indicate a multiple pregnancy or a variety of abnormalities in the fetus.Such measures can also be women with diabetes mellitus - threatening and incurable disease and hormonal contraceptives.The emergence of human chorionic gonadotropin in the blood of pregnant is an unfavorable sign, which may indicate the presence of the organism in their hormone-dependent tumors.
Today, a pregnancy test can be performed at the earliest timing, first at home, using a pregnancy test, and then - to investigate the blood that was finally install or remove the diagnosis of pregnancy.