Total Leukocyte Count

Leukocytes or WBCs are white-colored blood cells that are a part of the immune system and defend the body against infections and diseases. There are five types of WBCs, namely basophils, eosinophils, lymphocytes, monocytes, and neutrophils, and each one supports the immune system differently. 

A decrease in the TLC count is referred to as leukopenia and indicates a decline in the body’s ability to fight infections. Whereas, an increase in TLC, known as leukocytosis, indicates acute infections and inflammation. Your doctor may advise the Total Leukocyte Count test if you show symptoms suggestive of an infection, inflammation, or other health conditions like bone marrow disorders. However, this test is followed up with other tests to determine the exact cause of the abnormal results. A TLC test is also used to monitor your response to medical treatments that can affect the immune system, including chemotherapy which is known to affect the number of leukocytes. No special preparation is needed for a TLC test; eat or drink normally as per your daily routine.

Test result ranges are approximate and may differ slightly between labs depending on the methodology and laboratory guidelines. The test results will help your doctor determine your medical condition, make recommendations for lifestyle modifications such as diet and exercise, decide whether or not medication will be required to manage your condition and formulate your overall treatment plan.