What is the normal number of white blood cells in blood?

Prepare for the AAB Medical Technologist (MT) Generalist Exam with flashcards and multiple choice questions. Each question includes hints and explanations to boost your understanding. Get exam-ready now!

The normal range for white blood cells (WBCs) in human blood is 4,000 to 11,000 cells per microliter. This range is crucial for evaluating a person's immune response and overall health since WBCs are integral to the body's defense mechanisms against infections and diseases. Values outside this range may indicate various health conditions, such as infections, immune disorders, or blood disorders.

Different factors can influence WBC counts, including age, sex, and existing medical conditions; hence, the specific range is widely accepted in clinical practice.

The other ranges provided would either suggest fewer white blood cells than are typical, which could imply a possible risk for infection or would indicate a significantly higher count, potentially pointing to conditions like leukemia or other health disorders where the immune response is elevated. Understanding this normal range is essential for medical technologists when interpreting laboratory results and assessing patient health.

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