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).
If it is determine you have a thin uterine lining, most doctors will prime the uterus with estrogen medications to see if the endometrium responds well and thickens. If this does not work, it then indicates the blood flow is compromised or the endometrial tissues are damaged.he endometrium is the layer of the uterus that thickens in preparation for the implantation of the fertilized embryo. The endometrium is also the layer that is shed during menstruation. Estrogen is responsible for creating a thick, lush and blood rich endometrium.