Total Leucocyte Count (TLC)
The Total Leucocyte Count (TLC), also known as the White Blood Cell (WBC) count, is a blood test that measures the total number of white blood cells in a sample of blood. White blood cells are an essential part of the immune system and play a crucial role in defending the body against infections and diseases. The TLC is used to evaluate several aspects of health:
- Infection: An increase in the total white blood cell count, known as leukocytosis, often indicates the presence of an infection. The specific type of white blood cells that are elevated can provide clues about the nature of the infection.
- Inflammation: Inflammatory conditions, such as rheumatoid arthritis or inflammatory bowel disease, can also cause an elevation in the total white blood cell count.
- Bone Marrow Disorders: Abnormalities in the bone marrow, where white blood cells are produced, can affect the total white blood cell count. For example, leukemia, a type of blood cancer that affects white blood cells, often results in abnormal white blood cell counts.
- Immune System Disorders: Disorders affecting the immune system, such as autoimmune diseases, may be associated with changes in the white blood cell count.
- Response to Treatment: Monitoring the white blood cell count over time can help assess the body's response to treatment for infections or other medical conditions.