CSF Immunoglobulin G (IgG) Index

CSF Immunoglobulin G (IgG) Index

CSF Immunoglobulin G (IgG) Index is a diagnostic measure used to assess the presence of multiple sclerosis (MS) and other neurological conditions. The index compares the concentration of IgG in cerebrospinal fluid (CSF) to that in serum. A high CSF Immunoglobulin G (IgG) Index suggests increased intrathecal synthesis of IgG.