Identify the correct value.

Options

A. RBC count = 5.5 million/`mm^3` of blood
B. Hb count = 12 - 16 gm/100 ml of blood
C. Platelet cound = 1.5 to 3.5 lac/100 ml of blood
D. Neutrophils = 60 - 65% of total WBC.

Answer

To solve the question of identifying the correct value among the given options, we will analyze each option based on known biological values related to blood components.

### Step-by-Step Solution:

1. **Analyze Option 1: RBC Count**
- The option states that the RBC (Red Blood Cell) count is 5.5 million per cubic millimeter.
- The normal range for RBC count is approximately 3.93 to 5.69 million per cubic millimeter.
- Since 5.5 million falls within the normal range, this option is **incorrect** because it does not specify a range.

**Hint:** Always check if the value falls within the established normal range for the parameter being evaluated.

2. **Analyze Option 2: Hemoglobin Count**
- This option claims that the hemoglobin count is between 12 to 16 grams per 100 ml of blood.
- Hemoglobin levels vary between genders: typically, females have a range of 11.5 to 15.5 grams, while males have a range of 13.5 to 17.5 grams.
- Since the option does not account for gender differences and does not accurately represent the ranges, this option is **incorrect**.

**Hint:** Consider variations in biological values based on gender or age when evaluating ranges.

3. **Analyze Option 3: Platelet Count**
- The option states that the platelet count is between 1.5 to 3.5 lakhs (150,000 to 350,000) per 100 ml of blood.
- The normal platelet count indeed falls within this range (1.5 to 3.5 lakhs).
- Therefore, this option is **correct**.

**Hint:** Verify if the stated values align with established medical references for the specific blood component.

4. **Analyze Option 4: Neutrophil Count**
- This option states that the neutrophil count is between 60% to 65%.
- Neutrophils typically make up about 40% to 60% of the total white blood cell count.
- Since the stated range exceeds the normal upper limit, this option is **incorrect**.

**Hint:** Familiarize yourself with the normal percentage ranges of different types of white blood cells to assess their accuracy.

### Conclusion:
After analyzing all four options, we conclude that **Option 3** (Platelet count of 1.5 to 3.5 lakhs per 100 ml of blood) is the correct value.