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. 2019 Jul 10;14(7):e0217263. doi: 10.1371/journal.pone.0217263

Table 1. Assay validation precision and accuracy.

Biomarker Nominal Concentration (pg/mL) Mean Measured Concentration
(pg/mL)
% CV % Theoretical
IL-6 2.45 (LLOQ) 2.58 1.0 105.3
7.72 7.38 3.3 95.6
54.50 54.30 3.2 99.6
265 263 0.9 99.2
444 (ULOQ) 476 2.2 107.2
CRP 69.2 (LLOQ) 67.7 1.4 97.8
6440 6073 0.5 94.3
1940 17907 1.2 92.3
68000 71871 0.2 105.7
108000 (ULOQ) 131880 4.0 122.1
TNFα 0.79 (LLOQ) 0.87 3.0 113.5
2.17 2.08 4.2 95.9
16.4 14.8 1.4 90.2
95.5 85.7 2.9 89.7
211 (ULOQ) 211 2.5 100.0
MCP-1 8.28 (LLOQ) 8.67 1.8 104.8
11.9 11.0 9.8 92.4
69.2 63.5 5.5 91.8
438 430 3.2 98.2
1060 (ULOQ) 1080 4.3 99.5
MIP-1β 17.5 (LLOQ) 24.5 7.8 90.4
142 132.0 4.6 93.0
560 544.5 1.9 97.2
776 745 1.3 96.0
2240 (ULOQ) 2330 0.4 104.0
Eotaxin 56.8 (LLOQ) 57.4 4.8 101.0
180 168.0 2.3 93.3
553 520 4.5 94
1480 1410 2.2 95.3
3640 (ULOQ) 3775 8.6 103.7
VCAM-1 90.8 (LLOQ) 89.1 1.0 98.1
1690 1536 0.6 90.9
5110 4786 0.9 93.7
17900 16826 1.8 94.1
28400 (ULOQ) 28201 5.1 99.3

CV; coefficient of variance; LLOQ; lower limit of quantification, ULOQ; upper limit of quantification