White Blood Cell (WBC) Checker
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The Role of White Blood Cells in Immunity
White blood cells, or leukocytes, are key components of the immune system. They protect the body against pathogens like bacteria and viruses. The five primary types of white blood cells—neutrophils, lymphocytes, monocytes, eosinophils, and basophils—each have unique roles in fighting infections.
Understanding High WBC Counts
An elevated count is a common response to infection, inflammation, tissue injury, or intense physical stress. Certain medications, particularly corticosteroids (like prednisone), can also raise WBC counts. In rare cases, extremely high levels indicate primary bone marrow disorders.
Understanding Low WBC Counts
A low WBC count, or leukopenia, can reduce your ability to fight infections. This can result from viral infections, autoimmune conditions, bone marrow disorders, or therapies like chemotherapy. Always consult your doctor if your count falls below typical levels.
When to Seek Urgent Medical Attention
- Low WBC counts accompanied by a fever of 100.4°F (38°C) or higher, chills, sore throat, or other signs of infection (Neutropenic Fever).
Frequently Asked Questions
For most healthy adults, typical ranges are between 4.5 and 11.0 x10^3/µL (4,500 to 11,000 cells per microliter).
Leukocytosis is the medical term for an elevated white blood cell count, often indicating infection, physiological stress, or inflammation.