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Table 3 Statistical results of four in-clinic antigen tests for Giardia using ProSpecT ELISA Giardia Test as the reference standard with calculated positive and negative percent agreement

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

In-clinic test % Positive agreement (95% CI) % Negative agreement (95% CI) Prevalence adjusted % agreementa
SNAP Giardia 91.8 (84.4–96.0) 95.0 (87.5–98.4) 94.8
Anigen Rapid CPV-CCV-Giardia Antigen Test 80.4 (71.3–87.2) 77.5 (67.1–85.4) 77.7
Witness Giardia Test 77.3 (68.0–84.6) 73.8 (63.1–82.2) 74.0
VetScan Canine Giardia Rapid Test 72.9 (63.2–80.8) 86.3 (76.9–92.3) 85.6
  1. aPercent agreement was adjusted for reported prevalence of infection determined by DFA as described in materials and methods