Cerebrospinal Fluid (CSF) Protein Profile (Posterior Fossa Fluid)

Why This Test Is Done

Your doctor may order this test if you have symptoms like severe headaches, neurological problems (such as weakness, numbness, or vision changes), or if they suspect conditions like meningitis, brain tumors, or bleeding in the brain. It helps assess the health of the fluid protecting your brain and spinal cord.

What to Expect Before the Test

You’ll likely have a small needle inserted into your back to collect a sample of CSF. This is usually done in a hospital or clinic setting. You may feel mild pressure afterward, but it’s generally quick and painless.

What the Results Mean

High protein levels in CSF might suggest inflammation, infection, or blood leakage. Low levels could indicate normal fluid composition or rare conditions. Your doctor will interpret results in relation to your symptoms and medical history.

Common Conditions Affecting Results

Conditions like multiple sclerosis, brain tumors, or traumatic brain injury can alter CSF protein levels. Infections (e.g., meningitis) or bleeding in the brain may also change these readings.