Cerebrospinal fluid (CSF) total protein concentration

Why This Test Is Done

Your doctor may order this test to investigate symptoms such as headaches, neurological problems, or signs of conditions like meningitis, multiple sclerosis, or brain tumors. It’s often done alongside other tests, such as a lumbar puncture, to get a clearer picture of what’s affecting your health.

What to Expect Before the Test

You’ll typically have a small needle inserted into your lower back to collect a sample of CSF. This procedure is usually painless but may cause mild discomfort. You may be asked to lie still for a short time afterward to prevent bleeding.

What Happens During the Test

The collected CSF sample is sent to a lab where it’s analyzed for protein content. The results help determine if there’s an abnormal buildup of protein, which could indicate inflammation, infection, or other neurological issues.

Possible Results and Their Meaning

Higher-than-normal protein levels in CSF might suggest conditions like Guillain-Barré syndrome, multiple sclerosis, or certain types of brain tumors. Lower-than-normal levels are less common but could indicate bleeding into the CSF or other rare conditions.