In leukaemia (Blood cancer) leucocyte count `:-`

Options

A. `gt` 1 lac
B. `lt` 10,000
C. 10-20,000
D. None

Answer

### Step-by-Step Solution:

1. **Understanding Leukaemia**:
- Leukaemia is a type of cancer that affects the blood and bone marrow. It is characterized by the overproduction of abnormal white blood cells (leucocytes).

2. **Definition of Leucocytes**:
- Leucocytes, also known as white blood cells (WBCs), are crucial components of the immune system. They help the body fight infections and other diseases.

3. **Normal Leucocyte Count**:
- In a healthy individual, the normal range of leucocyte count is typically between 6,000 to 8,000 cells per cubic millimeter (mm³) of blood.

4. **Leucocyte Count in Leukaemia**:
- In cases of leukaemia, the leucocyte count is significantly elevated. It can range from 100,000 to 400,000 cells per mm³, which is much higher than the normal range.

5. **Analyzing the Options**:
- Given the options:
- A) Greater than 1 lakh
- B) Less than 10,000
- C) 10,000 to 20,000
- D) None of the above
- The correct answer is option A, as it accurately reflects the elevated leucocyte count seen in leukaemia.

6. **Conclusion**:
- Therefore, in leukaemia (blood cancer), the leucocyte count is greater than 1 lakh (100,000) cells per mm³.