TABLE 11-6. CAUSES OF ELEVATED CSF PROTEIN*
- From serum accompanying hemorrhage or a traumatic tap: add approximately 1 mg% protein for every 700 RBCs.
- Intracerebral hemorrhage (the amount of protein is usually elevated disproportionately to the amount of blood).
- Many inflammatory conditions.
- Many neoplasms.
- Occasionally with degenerative diseases (but usually the level of protein is normal or only minimally elevated).
- Sometimes with cerebral infarction (usually not greater than 100 mg%).
- Many peripheral neuropathies.
- Diabetes mellitus.
- Guillain-Barre syndrome.
- Stagnant CSF, as below an obstructing spinal tumor or after a ventricular shunting procedure.
- Laboratory error.