Table 2.
Statistical results of four in-clinic antigen tests for Giardia using DFA as the reference standard with calculated sensitivity and specificity
| 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 |
aPercent agreement was adjusted for reported prevalence of infection determined by DFA as described in materials and methods