How many times does it take to make a pregnancy test
How many times does it take to make a pregnancy test
In the absence of expected menstruation and availableunprotected sexual intercourse, it is necessary to consult a gynecologist and conduct research on hCG to detect pregnancy or its absence. The HCG test can be performed several times to obtain reliable results, taking into account the analysis time.
Instructions
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HCG - human chorionic gonadotropin -The hormone that produces the cells of the chorion, that is, the cells of the envelope of the embryo. In the presence of pregnancy, the concentration of this hormone in the mother's blood increases twice every 2-3 days, reaching a maximum by 12 weeks of pregnancy, after which its concentration stabilizes and remains at the same level. Circulating in the blood of a pregnant woman, some of the hCG is filtered by the kidneys into the urine in unchanged form. The gonadotropin content in urine is two times lower than in the blood. On the detection of a hormone in the blood and urine, its concentration based pregnancy tests.
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After fertilization, the egg within 3-14days should be attached to the uterus, where the development of the fetus will occur and the production of the chorionic gonadotropin will start. Depending on the time for which the fertilized egg is attached to the uterus, pregnancy can be diagnosed one week before the expected menstruation, and can be a week after the delay. The essence of research on pregnancy is determined by the reaction of the interaction of chorionic gonadotropin with a special reagent. The higher the concentration of hCG, the brighter the color of the forming compound and the longer the gestation period. Analyzes for pregnancy are given in specialized laboratories or at home.
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For a pregnancy test in the homeit is necessary to buy a test strip in the pharmacy in advance for the determination of pregnancy and a container for biological material. The study is best done in the morning portion of urine, when the concentration of hCG is high. It is necessary to wash, collect all the morning urine in a container for biomaterial, lower the test strip to the level marked on it. Place the test strip on a flat horizontal surface and wait for the time indicated in the instructions, then evaluate the result. If only one strip is shown on the test strip, then there is no pregnancy. If there are two colored stripes, you can talk about the onset of pregnancy. The weakly expressed second stripe confirms the fact of pregnancy, but indicates a low concentration of hCG in the urine. It is necessary to repeat the analysis after 2-3 days to clarify the fact of pregnancy.
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In the laboratory,Pregnancy is given in the blood or in the morning portion of urine. All freshly extracted urine for analysis is collected after taking a shower in a container for biological material, labeled with a surname, first name, patronymic and date of birth, and delivered in a short time to the laboratory. Blood for examination is taken in the morning on an empty stomach from the vein in the treatment room of the polyclinic. If the analysis is carried out at an early pregnancy, it is possible to obtain a negative result. It is recommended to retake the analysis after 5-7 days. If the concentration of hCG in biological material is low, then the test should be repeated after some time. If the concentration of the hormone in the blood is more than 25 mU / ml, then this indicates the presence of pregnancy.
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The number of necessary studies to identify the fact of pregnancy is determined individually by a gynecologist following a survey of the pregnant woman and the results of the tests.
