What is the normal amount of progesterone?

Some women have not gotten pregnant after preparing for pregnancy for a period of time. At this time, you should pay attention. It is recommended to go to the hospital to check the progesterone level to see if it is too low. There are many factors that cause low progesterone. After confirming the cause through examination, we can provide targeted treatment and conditioning. Low progesterone is very harmful to women. Let us now understand what is considered normal progesterone level.

What is normal progesterone level in early pregnancy?

1. Progesterone is secreted by trophoblast cells and corpus luteum before 8 to 10 weeks of pregnancy, and mainly comes from the placenta after 8 to 10 weeks of pregnancy. The amount of progesterone gradually increases throughout pregnancy, rising more slowly in the early stages of pregnancy, faster in the middle stages, and reaching a peak at full-term pregnancy. Serum progesterone is quite stable during 5 to 12 weeks of pregnancy and has little to do with gestational age.

2. Changes in progesterone levels are a reliable indicator of whether corpus luteum function and placental development are normal. Since serum levels are stable in early pregnancy, continuous monitoring is not required, providing doctors with an early basis for diagnosis.

3. Next, let us understand how a woman’s progesterone levels change after pregnancy. For example, the reference value of progesterone (ng/mL) for pregnant women in weeks 1-3 is 4.7-50.7; the reference value of progesterone (ng/mL) for weeks 4-6 is: 19.4-95.3. In short, the normal progesterone level after pregnancy should be: 63.4-94.5 in early pregnancy, 95-150 in mid-pregnancy, and 150-1500 in late pregnancy.

4. Progesterone levels are related to the outcome of early pregnancy. The serum progesterone levels of women with embryonic arrest and ectopic pregnancy are significantly lower than those of women with threatened abortion and normal early pregnancy. When progesterone is between 15 and 25 ng/mL, the pregnancy outcome is basically intrauterine pregnancy, but early threatened abortion is prone to occur. When progesterone is less than 15 ng/mL, the pregnancy outcome is often ectopic pregnancy or missed abortion.

5. When progesterone is greater than 25 ng/mL, the pregnancy outcome is mostly normal intrauterine pregnancy, and some have threatened abortion. Generally, after supplementing luteal function, the pregnancy can continue.