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Table 2 Statistical results of four in-clinic antigen tests for Giardia using DFA as the reference standard with calculated sensitivity and specificity

From: Comparative performance of reference laboratory tests and in-clinic tests for Giardia in canine feces

In-clinic test

Sensitivity (95% CI)

Specificity (95% CI)

Prevalence adjusted % agreementa

SNAP Giardia

87.1 (79.1–92.5)

93.4 (85.2–97.5)

93.1

Anigen Rapid CPV-CCV-Giardia Antigen Test

80.2 (71.3–86.9)

80.3 (69.8–87.8)

80.3

Witness Giardia Test

73.3 (63.9–81.0)

71.1 (60.0–80.1)

71.2

VetScan Canine Giardia Rapid Test

70.00 (60.4–78.1)

85.5 (75.7–91.9)

84.7

Ova and Parasite Test

81.2 (72.4–87.7)

93.4 (85.2–97.5)

92.7

  1. aPercent agreement was adjusted for reported prevalence of infection determined by DFA as described in materials and methods