Total Leukocyte Count (WBC)
- Sample Type
- Standard
- Fasting
- No
- Unit
- cells/cumm
The Total Leukocyte Count measures the sum of all white blood cell subtypes (neutrophils, lymphocytes, monocytes, eosinophils, and basophils). It serves as a primary indicator of immune system activation. In the context of the TCDC panel, it is the 'master number' used to screen for systemic infection, inflammation, bone marrow disorders, and immune status. A rapid shift in WBC is a hallmark of the body's defense mechanism against pathogens.
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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 be temporarily elevated by non-pathological factors such as intense exercise, emotional stress, smoking, or pregnancy. Conversely, many common medications (like anticonvulsants or chemotherapeutics) can suppress the count.
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 Total Leukocyte 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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