title: The clinical value of commonly used spinal fluid diagnostic studies in the evaluation of patients with suspected multiple sclerosis.
abstract: OBJECTIVE
  This study was designed to evaluate the diagnostic value of cerebrospinal fluid (CSF) oligoclonal banding and immunoglobulin G (IgG) production in the diagnosis of multiple sclerosis.
  
  
  METHODS
  Spinal fluid changes in patients with suspected multiple sclerosis were compared with clinical data to determine sensitivity, specificity, and predictive value of the procedures. The results were evaluated in terms of cost compared with clinical utility in the managed care environment.
  
  
  METHODS
  The CSF oligoclonal banding and CSF IgG index were measured in 50 patients being evaluated for possible multiple sclerosis at a multispecialty group practice clinic.
  
  
  RESULTS
  CSF oligoclonal banding had a sensitivity of 75% and a specificity of 92% in the diagnosis of multiple sclerosis. The CSF IgG index had a sensitivity of 75% and a specificity of 95% in the diagnosis of multiple sclerosis.
  
  
  CONCLUSIONS
  Although neither test would identify 100% of patients with multiple sclerosis, the combination of CSF oligoclonal banding and an elevated CSF IgG index correctly identified most patients with multiple sclerosis and excluded all patients without the disease in this patient population.
authors: Scott & White Clinic, Temple, TX 76508, USA.
authors: G W
authors: GW
authors: Brasher
authors: A B
authors: AB
authors: Follender
authors: A M
authors: AM
authors: Spiekerman
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D003955:Diagnostic Tests, Routine / Q000592:standards*; D004587:Electrophoresis, Agar Gel; D005260:Female; D006123:Group Practice; D006801:Humans; D007074:Immunoglobulin G / Q000134:cerebrospinal fluid; D008297:Male; D008875:Middle Aged; D009103:Multiple Sclerosis / Q000134:cerebrospinal fluid* / Q000276:immunology; D012680:Sensitivity and Specificity; D014481:United States
chemical_list: D007074:Immunoglobulin G