The normal range of pleural fluid is characterized by a specific pH and protein content.
Pleural Fluid Characteristics
Pleural fluid, a clear ultrafiltrate of plasma, originates from the parietal pleura and normally possesses a specific makeup. Understanding these characteristics is crucial for identifying potential abnormalities.
Normal Pleural Fluid Properties
| Characteristic | Normal Range |
|---|---|
| Origin | Parietal pleura (ultrafiltrate of plasma) |
| Appearance | Clear |
| pH | 7.60-7.64 |
| Protein content | Less than 2% (1-2 g/dL) |
- pH: The normal pH of pleural fluid is between 7.60 and 7.64. This slight alkalinity is maintained by the balance of various components within the fluid.
- Protein Content: The protein content of pleural fluid should be less than 2%, which translates to 1-2 g/dL. A higher protein level may indicate an underlying issue like inflammation or infection.
Understanding Pleural Fluid
Pleural fluid functions as a lubricant, allowing the lungs to expand and contract smoothly within the chest cavity. Any deviations from the normal ranges can indicate pathological conditions, highlighting the importance of knowing these standard values.
