Neutrophil Count in Cerebrospinal Fluid (CSF)

Why Might This Test Be Ordered?

Your healthcare provider may order this test if you have symptoms like severe headaches, neck stiffness, fever, confusion, or neurological issues. It’s often used to check for conditions such as meningitis, brain infections, or other inflammatory diseases in the central nervous system.

What to Expect Before the Test

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

What the Results Mean

High neutrophil counts in CSF often indicate an infection (e.g., bacterial meningitis) or severe inflammation. Low or normal counts may suggest viral infections, autoimmune conditions, or other non-infectious causes. Results are interpreted by your doctor based on your symptoms and medical history.

Common Conditions Linked to Abnormal Results

Elevated neutrophils in CSF are commonly associated with bacterial meningitis, subarachnoid hemorrhage, or certain brain abscesses. Lower-than-normal counts might suggest viral meningitis, multiple sclerosis, or other neurological disorders.