A normal cerebrospinal fluid (CSF) level depends on the specific component being measured. Here's a breakdown of normal ranges for key CSF constituents:
Normal CSF Values
| Component | Normal Range | Units |
|---|---|---|
| Total Protein | 15 to 60 | mg/dL |
| Gamma Globulin | 3 to 12 | % of total protein |
| Glucose | 50 to 80 (or > 2/3 of blood sugar) | mg/dL |
Explanation of Key Components:
-
Total Protein: This measures the overall protein concentration in the CSF. Elevated levels can indicate inflammation, infection, or other neurological disorders.
-
Gamma Globulin: This is a specific type of protein, and an increased percentage can be associated with immune-related conditions affecting the central nervous system.
-
Glucose: CSF glucose levels are usually compared to blood glucose levels. Low CSF glucose in relation to blood glucose can suggest infection (bacteria or fungi consume glucose).
Important Considerations:
- These ranges are general guidelines, and specific laboratory values may vary slightly between institutions. Always interpret CSF results in conjunction with a patient's clinical presentation and other diagnostic findings.
- A doctor is needed to properly interpret CSF lab results.
