A person with chronic kidney failure will have

Options

A. high blood urea and high serum creatinine levels
B. high blood urea and low serum creatinine levels
C. low blood urea and high serum creatinine levels
D. low blood urea and low serum creatinine levels

Answer

### Step-by-Step Solution:

1. **Understanding Chronic Kidney Failure**:
- Chronic kidney failure (also known as chronic kidney disease) is a gradual loss of kidney function over time. The kidneys are responsible for filtering waste products from the blood and excreting them in urine.

2. **Function of the Kidneys**:
- The primary functions of the kidneys include the excretion of waste products (like urea and creatinine), regulation of electrolyte balance, and maintenance of fluid balance in the body. When kidney function declines, these processes are impaired.

3. **Effects on Blood Urea and Serum Creatinine**:
- In chronic kidney failure, the kidneys cannot effectively filter waste products. As a result, levels of urea and creatinine in the blood increase. Urea is a byproduct of protein metabolism, and creatinine is a byproduct of muscle metabolism.

4. **Analyzing the Options**:
- **Option 1**: High Blood Urea and High Serum Creatinine Level - This is correct because both urea and creatinine levels rise due to impaired kidney function.
- **Option 2**: High blood urea and low serum creatinine level - This is incorrect since creatinine levels would also be high.
- **Option 3**: Low blood urea and high serum creatinine level - This is incorrect as urea levels would be high.
- **Option 4**: Low blood urea and low serum creatinine level - This is also incorrect because both levels would be elevated.

5. **Conclusion**:
- The correct answer is **Option 1: High Blood Urea and High Serum Creatinine Level**. This reflects the impaired kidney function associated with chronic kidney failure.