Are blood tests for pregnancy reliable?

Now more and more people are getting married, and more and more families are welcoming new members. Especially since the second-child policy was implemented, this fertility peak is gradually coming. Some couples are eager to have a baby, so they try every possible means. It is very necessary to work hard on pregnancy checking. Now there are many ways to check pregnancy. Some people choose to use blood tests for pregnancy. Is this method reliable?

The fertilized egg begins to implant 7 days after intercourse, completes implantation in about 10 days, and then stimulates the trophoblast cells to secrete HCG. Pregnancy can be determined by testing HCG levels in the blood 10 days after intercourse. It is the earliest method to check whether you are pregnant. A blood test can usually confirm pregnancy 10 days after intercourse with a high accuracy rate, while a test strip test reflects the HCG level in urine, which changes more slowly than that in the blood and is usually used after menstruation is delayed.

Generally, human chorionic gonadotropin can be detected in blood within 10 days, and it can also be detected in urine through early pregnancy reagents. Of course, the longer the pregnancy lasts, the more obvious it will be. Blood HCG test cannot be done seven days after sexual intercourse; in addition, early pregnancy can be diagnosed by blood HCG test 10 days after sexual intercourse. This is currently the earliest and most accurate method of examination. Human chorionic gonadotropin is a sensitive indicator for detecting pregnancy, and a level significantly higher than normal indicates pregnancy. Human chorionic gonadotropin begins to be secreted in trace amounts on the 6th day after fertilization, and the secretion increases rapidly in early pregnancy, doubling on the 2nd day of the month, reaching its peak at 8-10 weeks, and then declines rapidly for 10 days. In the middle and late pregnancy, it is only 10% of the serum concentration and continues until delivery. If there is no placenta residue after delivery, it will disappear 2 weeks after delivery.

Are blood tests for pregnancy reliable? Many people have doubts about this method, but they can't help but try it. From the above introduction, blood test for pregnancy is a very effective method for checking pregnancy, and the error is very small. It can basically successfully detect pregnancy, so it is worth a try.