Polys, CSF

An elevated CSF PMN % can suggest a bacterial infection, such as bacterial meningitis, where neutrophils are mobilized to fight the infection. Other potential causes of increased PMN percentages in CSF include viral infections, certain autoimmune disorders, and some neurological conditions, though viral infections usually show a lower PMN count than bacterial cases. However, it’s essential to interpret CSF PMN % in conjunction with other CSF markers, symptoms, and clinical history to determine the underlying cause accurately. Elevated CSF PMN % warrants further medical investigation to ensure prompt and appropriate treatment.

The CSF PMN % biomarker refers to the percentage of polymorphonuclear leukocytes (PMNs), commonly known as neutrophils, found in cerebrospinal fluid (CSF). PMNs are a type of white blood cell involved in the immune response, and their presence in CSF can indicate inflammation or infection within the central nervous system. Typically, CSF contains very few white blood cells, and a low PMN percentage is considered normal.