The quantity of monocytes in the blood is determined by the absolute monocyte count. White blood cells called monocytes aid the body in battling illnesses and infections. The bodies also require them to get rid of malignant cells and damaged tissues, which helps to control our immunity. This test is used to identify and assist in the diagnosis of a number of ailments, including brucellosis, tuberculosis, and others. The test is suggested when the patient exhibits particular symptoms, such infections or autoimmune illnesses. In a healthy individual, 1–10% of the white blood cells in the body are absolute monocytes. If the body has 8000 white blood cells, the normal absolute monocyte range is between 80 and 800.