A Complete Blood Count (CBC) offers detailed insights into your overall health. By analyzing a single blood sample, the CBC assesses the full range of cells in your blood and examines specific characteristics of these cells. Given its ability to provide information on all types of blood cells, the CBC can help detect a wide array of medical issues. The CBC is primarily used for diagnosis, monitoring, and screening: Diagnosis involves identifying the cause of a patient's symptoms. The CBC can reveal various blood abnormalities associated with specific health conditions, making it a common diagnostic test. It often helps confirm or rule out certain conditions and is typically used alongside other tests to reach a definitive diagnosis. Monitoring refers to tracking a patient's condition over time. A CBC is useful for patients with known blood cell disorders, allowing doctors to assess how the condition is responding to treatment and to monitor for any potential side effects of treatments. Screening involves detecting health issues before symptoms appear. In some instances, a doctor may order a CBC as part of a routine check-up to screen for potential health concerns.