Which of the following is the most common kidney stone-forming compound ?
A. Calcium oxalate
B. Magnesium oxide
C. Sodium bicarbonate
D. Magnesium citrate

Options

A. B
B. C
C. D
D. A

Answer

To solve the question regarding the most common kidney stone-forming compound, we will analyze each of the options provided:

1. **Understanding Kidney Stones**: Kidney stones are hard deposits made of minerals and salts that form inside the kidneys. The composition of these stones can vary, but certain compounds are more common than others.

2. **Analyzing the Options**:
- **A. Calcium Oxalate**: This is a compound formed from calcium and oxalate. It is known to be the most common type of kidney stone, accounting for about 80% of all kidney stones.
- **B. Magnesium Oxide**: This compound is not typically associated with kidney stone formation.
- **C. Sodium Bicarbonate**: While this compound can affect urine pH, it is not a common component of kidney stones.
- **D. Magnesium Citrate**: This compound can actually help prevent kidney stones rather than form them.

3. **Conclusion**: Based on the analysis, the most common kidney stone-forming compound is **Calcium Oxalate**.

Thus, the correct answer is **A. Calcium Oxalate**.