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Concordance of ESAT-6–Free IGRA and Quantiferon-TB Gold in Healthy South African Adolescents
| ESAT-6–Free IGRA | ||||
|---|---|---|---|---|
| Negative (n) | Positive (n) | Total (N) | ||
| Quantiferon-TB Gold | Negative (n) | 106 | 11 | 117 |
| Positive (n) | 7 | 76 | 83 | |
| Total (n) | 113 | 87 | 200 | |
Abbreviations: ESAT-6, early secretory antigenic target; IGRA, interferon-gamma release assay.
