A complete blood count (CBC) or full blood count (FBC) or full blood exam (FBE) or blood panel is a test requested by a doctor or other medical professional that gives information about the cells in a patient's blood. A Medical technologist performs the requested testing and provides the requesting Medical Professional with the results of the CBC. A CBC is also known as a "hemogram".
The cells that circulate in the bloodstream are generally divided into three types: white blood cells (leukocytes), red blood cells (erythrocytes), and platelets or thrombocytes. Abnormally high or low counts may indicate the presence of many forms of disease, and hence blood counts are amongst the most commonly performed blood tests in medicine.