Reactive leukocytosis is present when the absolute count of granulocytes reaches what value?

Reactive leukocytosis typically occurs as a response to various stimuli, such as infections, inflammation, or stress. The normal range for a white blood cell count is approximately 4.0 to 11.0 x 10^9/L, which is why values that indicate leukocytosis usually exceed this norm.

In cases of reactive leukocytosis, an absolute count of granulocytes generally starts to be considered significant when it reaches around 7.0 x 10^9/L. Counts at or above this threshold suggest a physiological response to some underlying condition, such as an acute infection or inflammatory process.

Counts exceeding this value, particularly toward higher limits like 10.0 x 10^9/L and beyond, indicate a more pronounced response and can suggest severe or chronic conditions. Thus, the value of 7.0 x 10^9/L is representative of the early stages of leukocytosis and serves as a marker for recognizing a reactive process in the patient's white blood cell population.