Cerebrospinal Fluid (CSF) Protein by Mass Concentration

Why This Test Might Be Ordered

Your doctor may request this test if you have symptoms like headaches, neck stiffness, vision changes, or neurological issues that could involve the brain’s fluid. It’s also used to diagnose conditions such as meningitis, multiple sclerosis, or tumors pressing on the brain.

What to Expect Before the Test

You’ll likely have a simple spinal tap (lumbar puncture) where a small needle is inserted into your lower back to collect a small amount of CSF. The procedure is quick but may cause mild discomfort. No special preparation is needed, but inform your doctor about any medications you’re taking.

What the Results Mean

Elevated protein levels in CSF can indicate inflammation, infection, or blood leakage into the brain’s fluid. Lower-than-normal levels may suggest certain genetic or metabolic disorders. Your doctor will interpret results in the context of your symptoms and medical history.

Common Conditions Affecting CSF Protein Levels

Conditions like meningitis, multiple sclerosis, or brain tumors can raise CSF protein levels. Other causes may include autoimmune diseases, traumatic brain injury, or certain genetic disorders. Low protein levels are less common but could relate to rare metabolic or genetic conditions.