Doctors use an important blood test called a complete blood count, or CBC for short, to measure the number of each blood cell in your blood sample. If the CBC shows a low number of red blood cells, white blood cells, or platelets, your doctor may look at the cells under a microscope.
In a typical menstrual cycle, estrogen made by the maturing ovarian follicle causes the glands to grow and the endometrium to thicken (partly through an increased blood supply).This thickening of the uterine lining is called the proliferative phase of the menstrual cycle.n a typical menstrual cycle, estrogen made by the maturing ovarian follicle causes the glands to grow and the endometrium to thicken (partly through an increased blood supply).
What is a menstrual cycle?The menstrual cycle is the series of changes a woman's body goes through to prepare for a possible pregnancy. About once a month, the uterus grows a new, thickened lining (endometrium) so that it is ready to receive a fertilized egg. When there is no fertilized egg to start a pregnancy, the uterus then sheds its lining.