A Complete Blood Count (CBC) test is crucial for diagnosing, monitoring, and managing various medical conditions. It evaluates red blood cells (RBCs), white blood cells (WBCs), and platelets to assess anemia, infections, bleeding disorders, and overall bone marrow function. Key parameters like hemoglobin, hematocrit, and RBC indices (MCV, MCH, MCHC) help classify anemia types, while WBC count and differentials detect infections, inflammation, allergies, or leukemia. Platelet count indicates bleeding or clotting risks, and RDW highlights cell size variability, aiding anemia diagnosis. CBC is also valuable for monitoring chronic conditions, guiding treatment, and serving as a general health screening tool.