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DearAlyssa:
In the luteal phase, a progesterone level >10 ng/ml is normal. Some people make the level slightly higher (12 ng/ml) when using clomiphene. In early pregnancy, the level is expected to be above 15 ng/ml.
There is no upper limit on progesterone. The level is higher with multiple pregnancy, it rises progressively as the placenta grows, and near the end of pregnancy, 250 mg/day is being produced.
Progesterone is not a pregnancy test. Progesterone is produced both during the menstrual cycle and during pregnancy. The level of progesterone, when above 15 ng/ml, is associated with a normal pregnancy but it does not assure normality.
Keywords: progesterone
This information is provided for education purposes and is not a medical consultation. If you have specific questions, please speak with your healthcare provider.