Skip to main content
. 2015 Sep;31(3):255–264. doi: 10.5487/TR.2015.31.3.255

Table 3. Precision, accuracy, LOD, and LOQ.

Matrix HCAs AA

Conc. AA (ng/g) MeIQ IQ Glu-P-1 Glu-P-2 MeIQx Norhrman Harman Trp-P-2 PhIP Trp-P-1 AaC MeAaC

Non-fat liquid Intra-day precision (%) 0.67 3.7 0.9 8.8 11.2 7.2 6.0 2.8   5.9 13.3 8.3 10.8 - 2.9
3.33 4.8 2.4 8.5   5.9 4.0 2.3 1.8 10.9 10.8 9.5 10.5 9.6 2.9
6.67 1.6 1.7 4.9   5.1 3.4 3.0 1.8   5.8   8.9 7.6   7.5 2.0 2.4
Accuracy (%) 0.67 107.1 109.4   95.9 106.5 114.7   72.7   73.7 104.4 110.1   99.8 117.4 - 105.3
3.33   97.0 108.9 106.8 109.9 103.2 104.6   98.1 114.5 108.2 104.8   92.6   95.5 100.1
6.67 103.6 108.9   84.9   93.7 100.9 101.9 100.9 112.1 106.7 117.8   78.3 101.4   96.2
LOD LOQ (ng/g) LOD 0.09 0.023 0.19 0.26 0.18 0.088 0.045 0.15 0.34   0.19 0.28 - 2.69
LOQ 0.27 0.072 0.56 0.79 0.56 0.27   0.14   0.45 1.033 0.58 0.85 4.68 8.89
Non-fat solid Intra-day precision (%)   2 4.4 3.0 3.8 3.7 2.0 4.0 4.8   5.0 3.2 3.9 4.6 - 2.5
10 3.2 3.7 4.4 4.5 2.0 2.6 4.2 10.0 4.8 2.6 4.4 4.5 2.4
20 1.9 2.2 2.3 4.1 2.7 4.8 4.8   4.8 2.8 1.6 4.9 2.0 2.4
Accuracy (%)   2 95.9 107.7 113.5 108.5 114.9 105.3 108.1 98.2 101.2 108.3 83.3 - 103.9
10 95.4 107.7   80.5   81.5   98.1 100.7   99.6 71.8   84.7 103.1 94.7 119.1   97.6
20 97.2   98.1 102.0   97.8   98.6   96.9   83.9 99.1   99.8 108.4 90.1 106.4   95.2
LOD LOQ (ng/g) LOD 0.28 0.21 0.29 0.26 0.15 0.28 0.34 0.28 0.21 0.28 0.5 2.32   3.07
LOD 0.85 0.65 0.87 0.80 0.46 0.84 1.04 0.86 0.65 0.85 1.5 7.03 10.13
Fat solid Intra-day precision (%)   2.5 10.3   8.2 9.6 4.0   8.4 19.9 19.7 5.9 14.2 12.4 11.5 - 2.2
12.5   7.2 10.3 6.3 5.3 14.8   5.2 11.6 3.2   2.2   4.1 12.8 13.4 2.0
25      6.3   6.5 6.0 4.4   6.5   8.1   5.0 7.2   9.7 13.0   9.6   5.5 2.1
Accuracy (%)   2.5 94.8 107.5 89.8 90.8 115.0 103.9 94.4   93.1 108.5 105.8 113.0 -   85.8
12.5 98.4 102.0 85.4 90.2 100.3 116.5 95.1 102.6 109.7   99.5   99.5 106.3 100.6
25    97.4   93.0 77.9 75.9   90.8   85.5 97.0   89.6   98.3   97.0   84.5   75.1 102.9
LOD LOQ (ng/g) LOQ 0.64 0.68 0.57 0.23 0.64 1.36 1.23 0.39 1.01 0.87 0.86 2.59 3.00
LOQ 1.95 2.05 1.73 0.71 1.94 4.13 3.72 1.17 3.08 2.63 2.6   7.86 9.91