Table 2

Diagnostic performance of the ALS test*

GroupsLatent TB cases (n=45)Non-TB controls (n=40)
All TB cases
 HIV negative8680898686949874
 HIV positive9080947391949690
Pulmonary TB
 HIV negative8080798880949581
 HIV positive8680858990949294
Pleural TB
 HIV negative8080759787949494
 HIV positive8680678980918094
Lymph node TB
 HIV negative8680779784949494
 HIV positive1007880100100918894
  • * Patients with active TB were compared with latent TB cases or non-TB controls.

  • ALS, Antibodies in Lymphocyte Supernatant; NPV, negative predictive value; PPV, positive predictive value; TB, tuberculosis.