Quantiferon TB Gold -1

1
Quantiferon TB Gold -1

• Unaffected by BCG and NTM
• TB-specific antigens are only present in
• M.TB
• INF-Gamma in whole blood with an ELISA
  measurement
• 90 SENSITIVITY IN Culture TB
• 98 SPECIFICITY IN Culture TB
• www.cellestis.com

Further references lancet 2004 Dec Volume 4
2
QUANTIFERON GOLD - 2INF-Gamma based assay

• Advantages More Specific ,( BCG/MOTT), One
  visit good correlation with TST
• Disadvantages Technical, Analysis software,
  Blood, Cost,Usage, Refrigerated
• Components ESAT-6 antigen, CFP-antigens
• Limitations Not tested in IM states/children