How long can I check hcg pregnancy

The hCG test in the blood can be used as a test to distinguish the early pregnancy and diagnose related diseases. Therefore, the purpose is different, and the time of the test is also different. Under normal circumstances, blood can be drawn for hCG test 8-10 days after intercourse to determine whether the pregnancy is confirmed. When can I check hcg? How long does it take to test hcg pregnancy?

How long does it take for hcg pregnancy to be detected

1. Confirm pregnancy - the first step is 8-10 days after intercourse

The best time to test blood hCG is 8-10 days after intercourse. At this time, the test can be used as a pregnancy test to diagnose whether you are pregnant. In addition, this test can also be used to confirm single or multiple pregnancies during the first three months of pregnancy.

2. Diagnosis of abnormal pregnancy: Test hCG content every 2 days to see if it doubles

After a woman becomes pregnant, an increase in the β-hCG value in the blood can be detected from the 9th to 11th day, and then the β-hCG value can double every two days. If the test finds a slow increase rate for two consecutive times, it may be caused by factors such as ectopic pregnancy, test tube embryo abnormalities, or delayed intrauterine language development.

If the abnormal pregnancy is a hydatidiform mole, the hCG concentration in the blood cells is much higher than the corresponding monthly value during a normal pregnancy. Therefore, this difference can be used as an auxiliary diagnosis of hydatidiform mole, usually in the first 3 months of pregnancy.

3. Down syndrome screening: 15-20 weeks of pregnancy

Down syndrome screening comprehensively calculates the risk of the fetus suffering from Down syndrome by testing the levels of AFP and β-hCG in venous blood. The best time to do this test is between 15 and 20 weeks of pregnancy.

4. Miscarriage diagnosis: 4 days after childbirth or 13 days after artificial abortion

Since the fetus has been delivered, the woman's blood hCG test should return to normal 4 days after giving birth or 13 days after an abortion. If this is not the case, the following possibilities should be considered:

One is incomplete abortion. After the abortion, the woman may still have test tube embryo tissue left in her body.

Second, there may be residual embryos or fetal membranes in the woman's body after giving birth, or the woman herself may suffer from trophoblastic disease.