The Absolute Lymphocyte Count (ALC) is a critical component of a complete blood count (CBC) that measures the number of lymphocytes, a type of white blood cell, in a person’s bloodstream. Lymphocytes are a vital part of the immune system, playing a key role in defending the body against infections and diseases. An ALC is often used to assess the immune system’s health and function, and abnormal values can indicate various conditions, such as viral infections, immune system disorders, or certain types of cancers. Monitoring the ALC helps healthcare professionals diagnose and manage a wide range of medical conditions, enabling them to provide appropriate treatment and care to patients