Q: Does an hCG that rises quickly indicate twins?
A: You cannot diagnose a twin pregnancy just from the hCG. There is no sufficient scientific evidence that with twins there is always a faster-than-usual rise in hCG. Normal hCG values can vary up to 20 times in normal pregnancies. Variations in hCG increases are not necessarily a sign that the pregnancy is abnormal or that there are two or more fetuses. Please read more HERE.