How to determine pregnancy by blood?
The essence of the definition of pregnancy by blood analysis -identification of a special “pregnancy hormone” - human chorionic gonadotropin. It is produced by the cells of the embryo's membrane immediately after attachment to the wall of the uterus.
Blood leveling helps to determine pregnancychorionic gonadotropinPhoto: GettyWhen testing for hCG, doctors determine the presence in the body of a woman's chorionic tissue, which indicates the occurrence of pregnancy. The level of this hormone during pregnancy first increases in the blood, and only then in the urine. Therefore, the test results for hCG give the correct results several weeks earlier than the pharmacy pregnancy test. Blood is taken for analysis in the morning, on an empty stomach. When you donate blood at another time of day, you should refuse to eat 5–6 hours before the procedure. It is imperative to inform the doctor about taking hormonal and other medicines so that the test results are decoded correctly.
When is it best to donate blood to determine the level of hCG?
The level of "pregnancy hormone" in 5% of women withpregnancy begins to rise within 5−8 days from the moment of conception. In most women, the amount of the hormone increases from 11 days from conception. The maximum concentration of this hormone is reached by 10–11 weeks of pregnancy, and after 11 weeks its quantity gradually decreases. It is better to donate blood on hCG in 3–4 weeks from the day of the last menstruation to get a more reliable result. Now you know whether it is possible to determine pregnancy by blood and when it is better to do it. Doctors recommend taking this test twice, with an interval of several days. This is necessary to notice an increase in the level of hCG compared with the previous analysis result.
