White Blood Cell Count (WBC)
- Sample Type
- Standard
- Fasting
- No
- Unit
- 10^3/µL
The White Blood Cell (WBC) count measures the total number of leukocytes in the blood. As a primary component of the Complete Blood Count (CBC), it serves as a non-specific marker of the body's immune status. It is essential for screening for infections, inflammation, leukemias, and bone marrow suppression. It must be interpreted alongside the differential count to determine which specific cell type is affected.
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Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
WBC counts can be transiently elevated (leukocytosis) by physical stress, intense exercise, smoking, pregnancy, or medications like corticosteroids and lithium. Conversely, 'normal' counts may mask an underlying issue if the differential is abnormal.
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
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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