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The TC & DC test measures two complementary aspects of white blood cell status: the Total Count (TC) — the overall number of wh...
Also known as: Total WBC Count with Differential · TC DC Test · Total and Differential Leucocyte Count · WBC Count with Differential
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*Inclusive of home collection charges
The TC & DC test measures two complementary aspects of white blood cell status: the Total Count (TC) — the overall number of white blood cells in the blood — and the Differential Count (DC) — the breakdown of white blood cells into their five distinct subtypes (neutrophils, lymphocytes, monocytes, eosinophils, and basophils). Together, TC and DC provide a focused assessment of the immune system — identifying the nature, severity, and likely cause of WBC abnormalities that the total count alone cannot reveal. No fasting required.
Key benefits of this package include:
What Does the TC & DC Test (Total Count & Differential Count) Measure?
| Level / Result | Possible Interpretation |
|---|---|
| Normal TC + Normal DC | No significant immune or infectious abnormality detected |
| High TC + High neutrophils (> 70%) | Bacterial infection, inflammation, tissue necrosis, or corticosteroid use |
| High TC + High lymphocytes (> 40%) | Viral infection (dengue, EBV, CMV), CLL, pertussis — reactive or malignant lymphocytosis |
| High TC + High eosinophils (> 6%) | Allergic disease (asthma, eczema) or parasitic infection — AEC test recommended for precise count |
| Low TC (Leukopenia) + Low neutrophils | Severe viral infection, bone marrow suppression, autoimmune neutropenia, or aplastic anaemia |
| Low TC + Low lymphocytes | HIV/AIDS, immunosuppressive therapy, severe combined immunodeficiency, malnutrition |
| Very high TC (> 30,000) + Blast cells on DC | Possible acute leukaemia — urgent specialist evaluation and peripheral smear required |
Important Note: TC and DC provide WBC information only — they do not include haemoglobin, red cell indices, or platelet count. For complete blood assessment, a full CBC or Complete Haemogram is required. Percentage-based differentials should always be converted to absolute counts for precise clinical interpretation. All significant abnormalities must be reviewed by a physician.
Absolute vs. Percentage Differential — Why It Matters: The differential count is usually reported as percentages (e.g., neutrophils 80%). But percentages can be misleading: 80% neutrophils in a patient with total WBC of 3,000/µL gives an absolute neutrophil count (ANC) of only 2,400/µL — borderline normal — while 80% in a patient with total WBC of 20,000/µL gives ANC of 16,000/µL — markedly elevated. Absolute counts (TC × DC% ÷ 100) are clinically more meaningful than percentages alone. Medall's reports provide both — always use absolute counts for clinical decision-making.
Book once, we handle the rest. Our certified phlebotomist arrives at your doorstep — your report is delivered within 24 hours.
Trusted by millions of Customers across South India — these are the tests our doctors recommend most.
Screens for anaemia, infections, and immune health
