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Table 1 Results for trueness, precision and the expanded measurement uncertainty for cortisol analysis in modified Shieh

From: Cortisol directly impacts Flavobacterium columnare in vitro growth characteristics

Cortisol level (µg/L) Outliers (n) Values (n) AR (%) VCr (%) VCR (%) Ua (k = 2) (%) Ua (k = 3) (%) Ub (k = 2) (%)
0.05 1 19 104.21 8.01 9.62 23.45 33.07 45.17
0.25 0 20 95.18 2.94 2.91 10.64 13.55 36.86
1.00 0 20 99.10 1.92 2.85 6.60 9.45 35.60
5.00 0 20 99.40 1.76 1.89 4.38 6.27 35.07
50.00 0 20 98.79 1.74 2.20 5.61 7.81 35.27
  1. AR: apparent recovery, VCr: variation coefficient (repeatability), VCR: variation coefficient (reproducibility), U: expanded measurement uncertainty.
  2. aCalculation of U using linear summation with k = 2 (95% confidentiality interval) and k = 3 (99% confidentiality interval).
  3. bCalculation of U using quadratic summation with k = 2 (95% confidentiality interval).