What is the normal progesterone level on the seventh day of ovulation?

The physiological structure of women is very complex. At different stages, the progesterone values ​​and changes in the body are also different. Normally, women can judge the progesterone value based on the changes in their own bodies. Generally, if you are pregnant, the progesterone value will generally increase slowly, which is different from before pregnancy. Moreover, the progesterone value during menstruation is different from the progesterone value during non-menstruation.

What is the normal progesterone level on the seventh day of ovulation?

After ovulation, the egg is released and the remaining follicle wall collapses to form a corpus luteum. The corpus luteum secretes progesterone. Therefore, the progesterone value on the seventh day after ovulation should be greater than 15ng/ml. Therefore, clinically, progesterone is tested one week after ovulation. If the progesterone level is greater than 15ng/ml, it means that the ovary has ovulated.

The role of progesterone

Progesterone is a natural progestogen secreted by the corpus luteum of the ovary. It has a significant morphological effect on the estrogen-stimulated endometrium in the body and is necessary for maintaining pregnancy. The main function of progesterone is to make the glands in the uterine mucosa grow, the uterus become congested, and the endometrium thicken in the late menstrual cycle to prepare for the implantation of the fertilized egg. After the fertilized egg is implanted, it produces the placenta, reduces the excitability of the pregnant uterus, inhibits its activity, and allows the fetus to grow safely. Working together with estrogen, it promotes full development of the breasts in preparation for milk production. If progesterone is too low during pregnancy, it can easily cause miscarriage, premature birth, stillbirth, etc.

Normal progesterone levels

The normal value for women during the follicular phase is 0.6-1.0nmol/L; the normal value during the ovulation phase is 2.40-9.40nmol/L; and the normal value after ovulation is 20.8-103.0nmol/L. Female progesterone is divided into progesterone reference values ​​for normal women's menstrual cycle, progesterone reference values ​​for pregnant women, and progesterone reference values ​​for menopausal women. The specific reference data for different periods are as follows.

Normal values ​​of progesterone at different stages:

Measurement time Sample Old system unit Normal value Old-new coefficient Legal unit Normal value Old-new coefficient

Follicular phase blood 0.2～0.6ng/ml 3.18 0.6～1.9nmol/L 0.3145

Luteal phase blood 6.5～32.2ng/ml 3.18 20.7～102.4nmol/L 0.3145

7 weeks of pregnancy blood 24.5±7.6ng/ml 3.12 76.4±23.7nmol/L 0.32

Symptoms of Low Progesterone

Some women of childbearing age have low progesterone levels, which may manifest as symptoms such as hypothyroidism, fibrocystic breasts, gallbladder disease, hypoglycemia, etc., which are not easy to detect. Some may also experience irregular menstrual cycles, weight gain, vaginal dryness, breast tenderness and other symptoms. If women are careful, they can discover this disease. When pregnant women have low progesterone, infertility is the most obvious symptom. Progesterone is a hormone that delays the shedding of the uterine membrane when the egg cell and sperm combine to form an embryo. Low progesterone levels in the early stages of pregnancy may lead to miscarriage. Therefore, when women are preparing for pregnancy, they should do a pre-pregnancy physical examination and take a progesterone test to see if their progesterone levels are normal.

Consequences of low progesterone

Low progesterone is a dangerous disease for women. Progesterone plays a very important role for women. Fertility and embryo development are related to progesterone. Progesterone helps stimulate changes in the uterus during the reproductive process and promotes embryonic development by increasing blood flow to the blood vessels and tissues of the reproductive system. After the egg is released from the ovary, it attaches to the uterus. In theory, the egg and sperm combine to form an embryo. Progesterone is a hormone that delays the shedding of the uterine lining. If progesterone levels drop significantly during the first few weeks of pregnancy, it can cause miscarriage. Therefore, low progesterone is very harmful to women's bodies. It can easily lead to infertility before pregnancy; after pregnancy, low progesterone will increase the risk of miscarriage.