Human chorionic gonadotropin, abbreviated as hCG, is also known as human placental lactogen. It is normal for hCG levels to reach 20,000 during the 50th day of pregnancy. The normal range of hCG is relatively large due to significant individual differences. Generally, hCG levels during the 50th day of pregnancy mostly range from 10,000 to 200,000. If there are no clinical symptoms or discomfort, no signs of threatened abortion, and the embryonic development is consistent with the actual gestational age, then there is no need to worry.
Seven days after fertilization and implantation, hCG begins to be secreted, and pregnancy can be detected through blood hCG tests. The normal range of hCG during the 7-8th week of pregnancy is 7,650-229,000 mIU/mL, so the value should not be lower than 7,600 mIU/mL. After pregnancy, this value doubles every other day during the early pregnancy period, and regular checks are needed, along with progesterone checks, to determine if the fetus is healthy. It is recommended to undergo ultrasound examinations to confirm intrauterine pregnancy, the presence of fetal heartbeat, regular prenatal checkups, and prenatal screening. The normal range of blood hCG is less than 10 μg/L, and the normal range of β-hCG is less than 3.1I μg/L. In general, the normal β-hCG radioimmunoassay value for healthy individuals is less than 3.1I μg/L. If it exceeds 5 μg/L, pregnancy may be considered, and if it exceeds 10 μg/L, pregnancy can be basically confirmed. hCG levels can rise to greater than 2,500 μg/L between 35-50 days after pregnancy. During the first three months of normal pregnancy, hCG levels will basically double every 2-3 days. If it is a twin pregnancy, the value will be higher. If it is a molar pregnancy, hCG levels will be very high and increase rapidly. If it is an ectopic pregnancy, the value will be low and increase slowly.
