A premenstrual endometrial thickness of about 1 centimeter is normal.
Throughout the menstrual cycle, the lining of the uterus gradually changes from thin to thick. Throughout the menstrual cycle, the endometrium is divided into three main phases, i.e. the menstrual phase, the proliferative phase and the secretory phase.
During the menstrual phase, the thickness of the endometrium is the thinnest, usually between 1 and 2 millimeters. After the completion of the menstrual phase, the endometrium will enter the proliferative phase, in which the endometrium will thicken rapidly under the stimulation of estrogen, and the proliferative phase usually occurs between the 5th and 14th day of the menstrual cycle, and the thickness of the endometrium can reach 5 to 8 millimeters in the proliferative phase.
Finally, it enters the secretion phase, during which the endometrium will be affected by progesterone, and the thickness of the endometrium reaches about 1 centimeter before menstruation, and then normal menstruation occurs, and it enters the next menstrual cycle.
Therefore, a premenstrual endometrial thickness of about 1 centimeter is normal. If you want to determine the thickness of the endometrium, it is recommended to go to the hospital, complete the ultrasound and other related examinations, and analyze and judge under the guidance of professional doctors.