A complete blood count (CBC) is a blood test used to evaluate your overall health and

detect a wide range of disorders, including anemia, infection and leukemia. A complete

blood count test measures several components and features of your blood, including: Red

blood cells, which carry oxygen. the most common diseases a CBC detects include anemia,

autoimmune disorders, bone marrow disorders, dehydration, infections, inflammation,

leukemia, lymphoma, myeloproliferative neoplasms, myelodysplastic syndrome, sickle cell

disease, thalassemia, nutritional deficiencies