Progesterone 8ng/ml supplement how long is normal there is no definite time, it depends on whether the embryo survives after supplementing progesterone, if spontaneous abortion occurs progesterone will gradually decrease. If the progesterone is 8ng/ml in early pregnancy, it means that the progesterone is very low, the occurrence of preeclampsia, the need to apply progesterone drugs to supplement. During the period of taking drugs need to regularly review the level of progesterone, progesterone level up, to see whether the embryo is still viable, that is, the level of human chorionic gonadotropin, if it is normal, progesterone is also normal, you can not supplement. If the level of human chorionic gonadotropin decreases gradually and spontaneous abortion occurs, then the progesterone will also decrease gradually with the discharge of the pregnancy, and the supplementation of progesterone will be meaningless, so there is no need to supplement. Low progesterone in addition to actively choose medication, but also need to pay more attention to rest, avoid overwork, regular obstetric examination.