Hcg doubling by 0.7-1 times per day is normal, and the doubling phenomenon of Hcg mainly occurs within the first 10 weeks of pregnancy. During this period, it is the fastest time for Hcg values to rise. If it can double normally every day, its peak can reach between 100,000-200,000 U/L. After 10 weeks of pregnancy, the Hcg value will gradually decline. By the 12th week of pregnancy, the Hcg value will drop to tens of thousands of U/L, and then remain stable until the late pregnancy.
Situation 1: The Hcg doubling value can fluctuate by 10% above or below 66%. It's okay. Hcg and progesterone are not the same thing, because the value of progesterone will continue to rise; while Hcg doubles every two days, reaching its peak in the second month of pregnancy and continuing until it drops rapidly after 12 weeks, then maintaining a certain level.
Situation 2: Hcg is also normal at the beginning of early pregnancy, and everyone's Hcg is different, so there is no need for comparison. Even if the gestational weeks are the same, Hcg values may vary greatly, which is normal. As long as the doubling rate is good in the later stages, there will be no problem, and it will always increase. Generally, the doubling rate is faster before the 6th or 7th week of early pregnancy because the value is small, so it can double by two or three times in two or three days. From the 8th to the 10th week, Hcg will rise to a peak of 200,000 to 300,000, and then gradually decline to a stable value. In addition, the Hcg of twins or multiples will be higher.
Situation 3: Hcg is present in women's blood or urine, and the Hcg value increases with the increase of gestational weeks after pregnancy. Generally speaking, for normal intrauterine pregnancy, the doubling time of Hcg is usually 1.8 days; Hcg doubles every 2 days. Abnormal Hcg values may indicate delayed ovulation, poor embryonic development, or abnormal pregnancy.
