White Blood Cell Count (WBC)
- Sample Type
- Standard
- Fasting
- No
- Unit
- x10^3/µL
The WBC count measures the total number of leukocytes in the blood, which are the primary components of the immune system. Within a Complete Blood Count (CBC), it serves as a non-specific marker of inflammation, infection, and bone marrow health. It is critical for diagnosing leukemias and monitoring response to treatments like chemotherapy.
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Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
WBC counts can fluctuate significantly due to acute stress, tobacco use, intense exercise, or pregnancy. Furthermore, many medications (corticosteroids) can cause a high WBC count (demargination) without an underlying infection.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for White Blood Cell Count (WBC):
Official Sources
- WBC count: MedlinePlus Medical EncyclopediaMedlinePlus
Research & Guidelines
Related Indicators
Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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