Table 2.

Diagnostic performance of antibody tests for TB in alpacas

TestNo. of true positive test results/no. of infected animals tested (% sensitivity [95% CI])No. of true negative test results/no. of uninfected animals tested (% specificity [95% CI])No. of true TB detection test results/total no. of animals tested (% accuracy [95% CI])
M. bovisM. microtiTB total
RT24/341/125/35 (71.4 [53.7–85.4])93/95 (97.8 [92.6–99.7])117/130 (90.0 [83.5–94.6])
DPP25/341/126/35 (74.3 [56.7–87.5])94/96 (97.6 [92.7–99.8])120/131 (91.6 [85.5–95.7])
RT and/or DPP30/341/131/35 (88.6 [73.3–96.8])92/95 (96.8 [91.1–99.3])123/130 (94.6 [89.2–97.8])