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 blood clots are found with the period, this should not be a cause for concern as many girls and women experience this as part of their regular menstruation.Typically these clots tend to occur on the days of the heavy flow, may vary in size and clots may appear darker than menstrual blood.lots with your periods are a result of the physiological changes that occur during the course of the menstrual cycle. The lining of the uterus thickens as a result of hormone action, primarily estrogen and progesterone, and subsequently sloughs off if pregnancy does not occur.