What is the normal value of corpus luteum? What is the formation mechanism?

The corpus luteum is also called luteinizing hormone. It is a substance that exists in the female body and has a significant impact on female fertility. The corpus luteum secreted within a reasonable range can regulate the secretion level of female sex hormones, as well as menstruation and ovulation. Therefore, it is very important to pay attention to the corpus luteum level for women who want to get pregnant. Let’s take a look at what the normal value of the corpus luteum is? What is the formation mechanism?

The normal values ​​of luteinizing hormone for women are generally follicular phase: 2.12-10.89, ovulation phase: 19.8-103.3, luteal phase: 1.20-12.86, menopausal phase: 10.87-58.64.

Mechanism of corpus luteum formation:

In the presence of follicle-stimulating hormone, it works synergistically with follicle-stimulating hormone to stimulate the secretion of ovarian estrogen, causing the follicles to mature and ovulate, and causing the ruptured follicles to form a corpus luteum and secrete estrogen and progesterone. Stimulates the development of interstitial cells and promotes their secretion of testosterone. Therefore, it is also called interstitial cell promoting factor (or interstitial cell stimulating hormone). The secretion of luteinizing hormone is regulated by luteinizing hormone-releasing hormone in the hypothalamus. After castration, luteinizing hormone secretion increases in men, but is suppressed by testosterone.

After menstruation, the LH concentration in a woman's body will gradually increase, reach a rapid peak at a certain moment, and then drop rapidly. Ovulation occurs 18 to 24 hours after this LH peak, and almost always within 48 hours. LH has a very short half-life and is rapidly eliminated from the body, primarily through the urine. If the LH concentration in urine exceeds a certain value, the ovulation monitoring test paper may appear similar to the pregnancy test strip. If it is positive, two purple-red lines appear, indicating that ovulation has occurred. If it is negative, only one line appears, indicating that no ovulation has occurred. If it is positive, it means that the patient's ovulation function is normal and infertility is caused by other reasons, and other items need to be checked; if it is negative, further examination of the cause of anovulation is needed.