An HCG value of 100-5000 mIU/ml is normal 16 days after pregnancy. HCG refers to human chorionic gonadotropin, and an elevated level indicates a possible pregnancy. Generally, the HCG value increases with the duration of pregnancy and peaks after 8-10 weeks of gestation and then begins to decline, disappearing two weeks after delivery. There are normal HCG ranges for each stage of pregnancy, and it is recommended that you review your test on time and address any problems as they arise. After 16, i.e. 2 weeks of pregnancy, the normal value of HCG at 2-3 weeks of pregnancy is 100-5000mIU/ml, but this is only an approximate range, when it is in the normal range, then you don’t need to worry, keep your mind in good condition and have the checkup on time, if the result is not in this range, you don’t need to worry too much, and you need to combine with your personal situation and the relevant checkups to make a judgment. If the HCG value is low, it may be due to embryonic dysplasia, ectopic pregnancy and other possibilities, which need to be evaluated together with ultrasound.