Normal estradiol levels at 7 weeks of pregnancy

Estradiol is a hormone secreted by the female body. It has a great effect on the female body, such as lowering cholesterol, allowing the endometrium to proliferate, or strengthening the contraction of the female uterine smooth muscle, maintaining normal milk secretion, etc. The value of the hormone estradiol will change after a woman becomes pregnant. Below is a detailed introduction to the normal value of estradiol at seven weeks of pregnancy.

The normal level of estradiol at 7 weeks of pregnancy is 25-309pmol/L.

Estradiol is a hormone secretion. It is a steroid hormone secreted by the female ovaries and is the main female hormone. During pregnancy, the value of estradiol is not fixed. During normal pregnancy, estradiol increases slightly and drops sharply after the placenta is delivered. Generally speaking, early pregnancy: 0--300ng/L, mid-pregnancy: 1000--8000ng/L, late pregnancy: 5000--27000ng/L. As long as there is no bleeding after pregnancy and the ultrasound shows that the embryo is developing normally, it is fine. As long as the ultrasound examination shows that the fetus is developing well, there is nothing wrong with a lower estradiol level. If the estradiol level is too low, you should seek medical attention and treatment in time to avoid delaying the disease and causing more harm.

Effects of estradiol during pregnancy

1. Promote endometrial hyperplasia.

2. Enhance the contraction of uterine smooth muscle.

3. It promotes the development and proliferation of mammary ducts, but larger doses can inhibit the release of prolactin from the anterior pituitary, thereby reducing milk secretion.

4. Anti-androgenic effect.

5. Lower blood cholesterol and increase calcium deposition in bones.

Effects of low estradiol levels on the fetus at 7 weeks of pregnancy

Too low estradiol levels are not conducive to creating a stable environment for conception and can easily lead to miscarriage. If a pregnant woman has symptoms of threatened abortion and her estradiol level is low after testing, she needs to supplement estradiol while preserving the pregnancy to increase the success rate of preserving the pregnancy. Estradiol should not be taken indiscriminately, and improper use may also have adverse effects on the fetus.

Causes of low estradiol

1. Ovarian diseases: ovarian absence or hypoplasia, primary ovarian failure, ovarian cysts. Pituitary amenorrhea or infertility.

2. Irregular menstruation: Irregular menstruation leads to endocrine disorders in the human body, causing the hormones in the human body to lose balance and fail to meet the standards required by the body.

3. Others: Hypothyroidism or hyperthyroidism, Cushing's syndrome, Addison's disease, malignant tumors, large-scale infections, renal insufficiency, focal lesions of the brain and pituitary gland, etc. can all reduce plasma estradiol.