TLC (TOTAL LEUCOCYTE COUNT) WBC

THE TOTAL LEUKOCYTE COUNT (TLC), ALSO KNOWN AS THE WHITE BLOOD CELL (WBC) COUNT, IS A CRUCIAL LABORATORY TEST THAT MEASURES THE TOTAL NUMBER OF WHITE BLOOD CELLS CIRCULATING IN THE BLOOD. THESE CELLS PLAY A VITAL ROLE IN THE IMMUNE SYSTEM, FIGHTING OFF INFECTIONS AND DISEASES. A NORMAL TLC RANGE IS TYPICALLY BETWEEN 4,000 AND 11,000 CELLS PER MICROLITER (CELLS/ L). AN ABNORMALLY HIGH TLC COUNT, KNOWN AS LEUKOCYTOSIS, CAN INDICATE VARIOUS CONDITIONS SUCH AS INFECTIONS, INFLAMMATION, LEUKEMIA, OR STRESS. CONVERSELY, AN ABNORMALLY LOW TLC COUNT, CALLED LEUKOPENIA, MAY BE A SIGN OF CERTAIN INFECTIONS, BONE MARROW DISORDERS, OR AUTOIMMUNE DISEASES.