What does the term "leukocytosis" refer to?

Leukocytosis refers specifically to an increase in the number of white blood cells (WBCs) in the bloodstream. This condition often indicates an underlying response to various factors such as infections, inflammation, stress, or even certain diseases. In a healthy individual, white blood cells play a crucial role in the immune system by fighting off infections and foreign invaders. Therefore, when leukocytosis occurs, it typically signals that the body is actively engaging in a response to an acute condition or disease.

Understanding leukocytosis is vital for medical professionals, as it can guide diagnostic decisions and treatment plans. For example, significantly elevated white blood cell counts might prompt further investigation for infections, inflammatory diseases, or hematological disorders like leukemia. Recognizing this term and its implications is essential in the field of medical technology and laboratory diagnostics.