The progesterone blood level in a normal pregnancy can be up to 10 times higher than when you are not pregnant.
What are normal progesterone levels? What does progesterone do?
- Progesterone levels are low before ovulation
- Progesterone levels rise within 7-10 days after ovulation
- Before you ovulate, progesterone levels are usually below 10 ng/ml
- In the middle of the second half of the cycle, midcycle, about 7-10 days after ovulation, progesterone levels ate usually above 8-10 ng/ml.
- Progesterone levels are usually higher when you are pregnant, but cannot be used to test for pregnancy.
- Even in a non-pregnant patient they can reach 20 ng/ml.
- After ovulation, progesterone levels should be greater than 10 to 12 ng/ml to have a better chance of a good pregnancy outcome.
- Progesterone levels drop when you are not pregnant
- The progesterone drop induces the menstrual period
- Progesterone levels fluctuate a lot, even on the same day and from one top the other hour
- The hCG pregnancy hormone blood level is a better indicator of a viable pregnancy than the progesterone level.
- After 6 weeks of pregnancy the best indication that the fetus is doing well is to check the fetal heartbeat.
- Checking the progesterone level can be confusing because it's difficult to assess whether a low progesterone level means the pregnancy is already abnormal to begin with, or if the low progesterone is the cause of the bad outcome. Many doctors feel it's a failing pregnancy that triggers a low progesterone and that giving progesterone will not make a difference.
- Progesterone supplementation should be reserved to the following women: IVF, those with Injectable ovulation medications, those who have been shown to have immune reasons for miscarriages