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Table 2 Performance characteristics

From: Laboratory evaluation of four HIV/syphilis rapid diagnostic tests

RDT

HIV antibodies

Treponema pallidum antibodies

Final invalid rate (%)

Sensitivity (%) (95% CI)

Specificity (%) (95% CI)

Inter-reader variability (%)

Sensitivity (%) (95% CI)

Specificity (%) (95% CI)

Inter-reader variability (%)

Initial

Final

Initial

Final

Initial

Final

Initial

Final

SD Bioline HIV/Syphilis Duo

100 (98.2–100)

100 (98.2–100)

99.5 (97.2–100)

99.5 (97.2–100)

0

86.5 (81.0–90.9)

87.0 (81.5–91.3)

99.5 (97.2–100)

99.5 (97.2–100)

4.0

0

DPP HIV-Syphilis Assay

100 (98.2–100)

100 (98.2–100)

96.0 (92.3–98.3)

97.5 (94.3–99.2)

1.0

85.0 (79.3–89.6)

86.5 (81.0–90.9)

100 (98.2–100)

100 (98.2–100)

4.5

0

Multiplo Rapid TP/HIV Antibody Test

99.5 (97.2–100)

99.5 (97.2–100)

99.5 (97.2–100)

99.5 (97.2–100)

0.3

70.0 (63.1–76.3)

73.5 (66.8–79.5)

99.0 (96.4–99.9)

99.5 (97.2–100)

4.8

0.5

Insti Multiplex HIV-1/HIV-2/Syphilis Antibody Test

99.5 (97.2–100)

99.5 (97.2–100)

88.0 (82.7–92.2)

93.5 (89.1–96.5)

4.5

78.5 (72.2–84.0)

81.0 (74.9–86.2)

99.0 (96.4–99.9)

99.0 (96.4–99.9)

1.8

0