Progesterone is a very important hormone for the women’s body while pregnant, as without progesterone it would not be able to carry a pregnancy to term. Progesterone is commonly known as “the pregnancy hormone”. This hormone is produced by the ovaries.
What is the normal progesterone level during pregnancy? Check the chart below.
Progesterone Level Chart in Pregnancy
- In early pregnancy normal levels of progesterone are: 1 – 28 ng/ml (3.18 – 89 nmol/L)
- During the first trimester normal progesterone levels are: 9 – 47 ng/ml (28.5 – 149 nmol/L)
- During the second trimester normal progesterone levels are: 17 – 146 ng/ml (54 – 464 nmol/L)
- During the third trimester normal progesterone levels are: 55 – 200 ng/ml (175 – 636 nmol/L)
Relationship Between Progesterone Level and Variability of Pregnancy
|< 5 ng/mL (16 nmol/mL)||Low level, non-viable pregnancy|
|< 10 ng/mL (32 nmol/mL)||Low level, abnormal pregnancy|
|< 25 ng/mL (80 nmol/mL)||Ecquivocal range|
|>25 ng/mL (80 nmol/mL)||Normal level, normal intrauterine pregnancy |
|< 40 ng/mL (125 nmol/mL)||Low level|
|>40 ng/mL (125 nmol/mL)||Normal level |
|< 80 ng/mL (255 nmol/mL)||Low level|
|>80 ng/mL (255 nmol/mL)||Normal level|
What Does Progesterone Do in Pregnancy?
After knowing the progesterone level chart, you may wonder why it is so important. The main functions of progesterone in pregnancy are as follows:
- It prepares the uterus lining for implantation of the embryo.
- It keeps the necessary thickness of the uterus lining which is necessary for having a normal pregnancy.
- It creates a perfect environment for the embryo and later for the developing fetus to grow inside the uterus, by increasing the arterial blood flow and glycogen levels.
- It prevents uterine contractions during pregnancy, until the right time for delivery.
- It thickens the uterine cervix and creates a mucous plug, in order to prevent the bacteria from entering the uterus and harming the developing fetus during pregnancy.
What Will Happen If You Have Low Progesterone in Pregnancy?
- Irregular menstrual periods
- Frequent menstrual periods
- Persistent fatigue
- Low libido
- Painful sexual intercourse
- Weight changes
- Ovarian cysts
- Migraines, etc.
What Causes It?
- Poor nutrition
- The use of certain medications for various medical conditions
- A lack of physical exercise, etc.