The Body Fluid Analysis Cerebrospinal Fluid (CSF) Test is a critical diagnostic procedure used to evaluate the fluid surrounding the brain and spinal cord. Performed via lumbar puncture, the analysis assesses physical appearance, measures glucose and protein levels, and conducts cell counts to detect infections (meningitis), inflammation, bleeding (subarachnoid hemorrhage), or neurological diseases like multiple sclerosis. Specialized tests can also identify specific proteins or malignant cells. Because CSF composition directly reflects the state of the central nervous system, this comprehensive analysis provides essential, often life-saving, information for the rapid diagnosis and management of complex neurological disorders.