Can HCG double every other day to rule out ectopic pregnancy?

At present, this situation can not be 100% ruled out ectopic pregnancy, there are a small number of ectopic pregnancy women, due to the pregnancy sac activity is better, so there will also be hcg doubled phenomenon, it is best to further do a B-ultrasound look, if there is a pregnancy sac in the uterus, you can rule out ectopic pregnancy.