The glomerular filtration rate is

Options

A. 125 mL/min
B. 180 L/day
C. 1300 mL/min
D. Both (1) and (2)

Answer

### Step-by-Step Solution:

1. **Understanding Glomerular Filtration Rate (GFR)**:
- The glomerular filtration rate (GFR) is a measure of how well the kidneys are filtering blood. It indicates the volume of fluid that is filtered from the blood into the kidney's nephrons per unit of time.

2. **Definition**:
- GFR is defined as the amount of filtrate formed by the kidneys per minute. It is a crucial indicator of kidney function.

3. **Units of Measurement**:
- The GFR is typically expressed in two common units:
- **Milliliters per minute (ml/min)**: This is the most common unit used in clinical settings.
- **Liters per day (L/day)**: This provides a daily perspective of kidney filtration.

4. **Normal Values**:
- The normal GFR for a healthy adult is approximately **125 ml/min**.
- When converted to a daily rate, this is equivalent to about **180 liters per day**.

5. **Conclusion**:
- Therefore, the glomerular filtration rate (GFR) is approximately **125 ml/min** or **180 liters/day**.