title: Multi-antigen and antibody assays (SEVA TB ELISA) for the diagnosis of tuberculous pleural effusion.
abstract: OBJECTIVE
  Prospective evaluation of inhouse developed SEVA TB ELISA using cocktail of Mycobacterial antigens ES-31 and EST-6 (containing ES-38 and ES-41) and their specific antibodies in the diagnosis of Tuberculous pleural effusion was done in a tertiary care hospital.
  
  
  METHODS
  Detection of circulating free and immune-complexed (IC) antigens and antibody by sandwich and indirect peroxidase ELISA respectively was done in pleural fluid and sera specimens. Total 33 patients with pleural effusion, including 24 patients diagnosed as tuberculous pleural effusion based on clinico-radiological, microbiological and biochemical profile (protein, LDH and ADA) of pleural effusion and nine patients with non-tuberculous pleural effusion, were studied.
  
  
  RESULTS
  Pleural fluid showing either antigen or immune-complexed antigen or antibody positive was considered as ELISA positive for tuberculous pleural effusion. Multi antigen and antibody assay (SEVATB ELISA) showed 100% specificity and 83% sensitivity in pleural fluid while 78% specificity and 92% sensitivity in serum of tuberculous pleuritis patients.
  
  
  CONCLUSIONS
  This study showed usefulness of SEVATB ELISA, using cocktail of ES-31 and EST-6 antigens and their antibodies for antibody and antigen detection respectively in analysis of either sera or pleural fluid samples of suspected tuberculous pleuritis patients as an adjunct test to clinical diagnosis.
authors: Department of Tuberculosis and Respiratory Diseases, Mahatma Gandhi Institute of Medical Sciences, Sevagram - 442 102, Wardha, Maharashtra.
authors: Gauri
authors: G
authors: Wankhade
authors: Anindita
authors: A
authors: Majumdar
authors: Pranita D
authors: PD
authors: Kamble
authors: Sajal
authors: S
authors: De
authors: B C
authors: BC
authors: Harinath
mesh_terms: D000907:Antibodies, Bacterial / Q000032:analysis; D000936:Antigen-Antibody Complex / Q000032:analysis; D000942:Antigens, Bacterial / Q000032:analysis; D004797:Enzyme-Linked Immunosorbent Assay / Q000379:methods; D006801:Humans; D010996:Pleural Effusion / Q000175:diagnosis* / Q000382:microbiology; D011446:Prospective Studies; D012680:Sensitivity and Specificity; D014396:Tuberculosis, Pleural / Q000175:diagnosis*
chemical_list: D000907:Antibodies, Bacterial; D000936:Antigen-Antibody Complex; D000942:Antigens, Bacterial