Blood Test (Complete Blood Count – CBC)
A Complete Blood Count (CBC) is one of the most common blood tests. It measures different components of blood, including red blood cells, white blood cells, hemoglobin, hematocrit, and platelets. This test helps diagnose conditions like anemia, infection, blood disorders, and overall health status.
| Parameter | Normal Range | Abnormal Findings & Indications |
|---|---|---|
| Red Blood Cells (RBC) |
Men: 4.7 โ 6.1 million/ยตL Women: 4.2 โ 5.4 million/ยตL |
Low โ Anemia, blood loss High โ Dehydration, lung/heart disease |
| Hemoglobin (Hb) |
Men: 13.8 โ 17.2 g/dL Women: 12.1 โ 15.1 g/dL |
Low โ Anemia, nutritional deficiency High โ Lung disease, polycythemia |
| Hematocrit (HCT) |
Men: 40 โ 52% Women: 36 โ 47% |
Low โ Anemia, blood loss High โ Dehydration, polycythemia |
| White Blood Cells (WBC) | 4,000 โ 11,000 /ยตL |
Low โ Weak immunity, viral infection High โ Infection, inflammation, leukemia |
| Platelets | 150,000 โ 450,000 /ยตL |
Low โ Bleeding disorders, dengue, bone marrow issues High โ Clotting risk, inflammation |
| Mean Corpuscular Volume (MCV) | 80 โ 100 fL |
Low โ Iron deficiency anemia High โ Vitamin B12/Folate deficiency |
| Mean Corpuscular Hemoglobin (MCH) | 27 โ 32 pg |
Low โ Microcytic anemia High โ Macrocytic anemia |
| Mean Corpuscular Hemoglobin Concentration (MCHC) | 32 โ 36 g/dL |
Low โ Iron deficiency High โ Spherocytosis |
| Red Cell Distribution Width (RDW) | 11 โ 15% |
High โ Mixed anemia (iron + B12 deficiency) Normal โ Uniform RBC size |
Why Doctors Prescribe Blood Test (CBC)
- To detect anemia, infections, or blood disorders.
- To monitor overall health during routine check-ups.
- To track treatment response in medical conditions.
- To evaluate symptoms like fatigue, fever, weakness, or bleeding.