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Table 1 Accuracy of Bioeasy™ rapid immunochromatographic test at point of care and in the laboratory

From: Accuracy and reliability of an NS1 rapid immunochromatographic test for DENV-1 diagnosis at point of care and in the laboratory

  Readings at 15’ Readings at 30’
Whole blood/POCa Serum/Laboratoryb Whole blood/POCa Serum/Laboratoryb
Sensitivity 76.7%c 82.2%c 78.3%c 84.9%c
(95%CI) (68.0–84.1) (74.1–88.6) (69.9–85.3) (77.2–90.8)
Specificity 87.0%d 100.0%d 87.5%d 95.8%d
(95% CI) (66.4–97.2) (85.8–100.0) (67.6–97.3) (78.9–99.9)
PPV 96.7% 100.0% 96.9% 99.0%
(95%CI) (90.8–99.3) (96.3% - 100.0) (91.2–99.4) (95.4–99.8)
NPV 42.6% 53.3% 44.7% 56.1%
(95%CI) (28.3–57.8) (37.9–68.3) (30.2–59.9) (39.8–71.5)
LR+ 5.9 19.8e 6.27 20.4
(95%CI) (2.0–17.0) (2.9–135.1) (2.2–18.1) (3.0–139.0)
LR- 0.27 0.18 0.25 0.16
(95%CI) (0.19–0.39) (0.12–0.26) (0.17–0.36) (0.10–0.24)
  1. POC point of care, 95% CI 95% confidence interval, PPV positive predictive value, NPV negative predictive value, LR+ positive likelihood ratio, LR- negative likelihood ratio
  2. aPerformed with whole blood
  3. bPerformed with serum
  4. cP-value <0.01
  5. dP-value >0.05 of χ2 McNemar test
  6. eLR+ calculated using 97.9% specificity