Ketonuria is

Options

A. Albumin in urine
B. Globulin in urine
C. Ketone bodies in urine
D. None of the above

Answer

### Step-by-Step Solution:

1. **Understanding Ketonuria**: Ketonuria is defined as the presence of ketone bodies in the urine. It is important to recognize that this condition indicates an abnormal metabolic state.

2. **Identifying the Cause**: Ketonuria typically occurs when the body is unable to utilize glucose effectively, often due to conditions such as uncontrolled diabetes, prolonged fasting, or a low-carbohydrate diet. In these situations, the body starts breaking down fats for energy, leading to the production of ketone bodies.

3. **Role of the Kidneys**: The kidneys are responsible for filtering waste products from the blood, including ketone bodies. When there is an excess of ketone bodies in the bloodstream, the kidneys excrete them into the urine, resulting in ketonuria.

4. **Differentiating from Other Conditions**: It is crucial to differentiate ketonuria from other urinary conditions. For example, the presence of proteins like albumin and globulin in the urine indicates proteinuria, not ketonuria.

5. **Conclusion**: Therefore, the correct definition of ketonuria is the presence of ketone bodies in the urine, which signifies an abnormal condition related to metabolic processes.

### Final Answer:
Ketonuria is the presence of ketone bodies in urine, indicating an abnormal metabolic condition.

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