It is normal for progesterone to drop below 35ng/ml in women after miscarriage, because the progesterone value in women’s body will increase significantly after pregnancy, while in the absence of pregnancy, there will be regular fluctuations within different physiological cycles. When a woman is in the luteal phase, the progesterone value in her body is the highest and the maximum value is 35ng/ml, so being below the upper limit means that the effect of pregnancy on progesterone in the body has disappeared. However, it takes time for progesterone to drop after an abortion, and it does not return to normal immediately after the abortion is completed, but about 21 days after the abortion. It can return to normal levels, so after about a month of abortion, you can go to the hospital for a review.