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The Total WBC Count (TC) test — also called Total Leucocyte Count (TLC) — measures the total number of all white blood cells ci...
Also known as: Total Leucocyte Count · TLC Test · WBC Count Test · Total White Cell Count · Leukocyte Count
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*Inclusive of home collection charges
The Total WBC Count (TC) test — also called Total Leucocyte Count (TLC) — measures the total number of all white blood cells circulating in the blood. It is the simplest, fastest immune system screening test and is a standard component of every CBC. An elevated WBC (leukocytosis) raises concern for infection, inflammation, or — rarely — malignancy. A low WBC (leukopenia) signals immunosuppression or bone marrow dysfunction. While the total count does not identify which WBC type is abnormal, it serves as a rapid flag that directs further investigation with a differential count. No fasting required.
Key benefits of this package include:
What Does the Total WBC Count (TC) Test Measure?
| Level / Result | Possible Interpretation |
|---|---|
| 4,000–11,000/µL (Normal) | Normal white cell count — no significant infection or immune abnormality detected |
| 11,000–20,000/µL (Mild-moderate leukocytosis) | Possible bacterial infection, inflammation, stress, or steroid effect — differential count and CRP recommended |
| 20,000–30,000/µL (Marked leukocytosis) | Significant bacterial infection, severe inflammation, or leukaemoid reaction — urgent evaluation |
| > 30,000/µL (Extreme leukocytosis) | Severe bacterial infection, sepsis, or possible haematological malignancy (leukaemia) — urgent specialist review |
| 1,500–4,000/µL (Mild leukopenia) | Viral infection (dengue, influenza), early medication effect, or mild bone marrow suppression |
| 500–1,500/µL (Moderate leukopenia) | Significant immunosuppression — high infection risk; bone marrow or autoimmune cause likely |
| < 500/µL (Severe leukopenia — neutropenic crisis) | Critical — extremely high risk of life-threatening infections; urgent hospitalisation may be required |
Important Note: Total WBC count alone does not identify which white cell type is elevated or reduced — a Differential Count (DC) is essential for clinical characterisation. Very high TC values (above 100,000/µL) can cause leucostasis — vessel blockage by crowded white cells — and require emergency evaluation. All significant WBC abnormalities must be reviewed by a physician.
Physiological Leukocytosis — When a High WBC Count Is Normal: Not every elevated WBC represents disease. Physiological leukocytosis occurs normally during pregnancy (up to 12,000–16,000/µL), after vigorous exercise (exercise leukocytosis), in the hours after meals (postprandial leukocytosis), and with emotional or physical stress. These are transient, asymptomatic elevations that return to normal quickly. Smoking chronically raises WBC — smokers typically have total WBC counts 30% higher than non-smokers. These physiological causes must be excluded before pursuing further investigation.
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Trusted by millions of Customers across South India — these are the tests our doctors recommend most.
Screens for anaemia, infections, and immune health
