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Table 1 List of the 19 discriminating peaks found by statistical analysis and detection limit of each peak. All P-values < 0.0001

From: MALDI-TOF MS as a new tool for the identification of Dientamoeba fragilis

No. m/z Rm DF Detection limit (trophozoites/ml)
Mean ± SD Mean ± SD
1 5100 1.37 ± 0.14 6.80 ± 0.54 103
2 7277 13.91 ± 0.37 2.39 ± 0.87
3 9229 8.94 ± 0.26 3.19 ± 0.85
4 6404 3.08 ± 0.11 12.06 ± 1.18 106
5 9539 14.63 ± 0.65 4.87 ± 1.85
6 5205 0.56 ± 0.08 8.20 ± 1.29 106
7 6377 2.23 ± 0.14 6.51 ± 0.87 106
8 6387 2.76 ± 0.17 6.49 ± 0.80 106
9 4758 3.70 ± 0.23 7.22 ± 0.80 106
10 5041 0.88 ± 0.10 9.94 ± 2.13 105
11 6415 5.23 ± 0.23 11.85 ± 1.96
12 4309 0.96 ± 0.10 8.61 ± 2.28 105
13 6285 1.95 ± 0.11 5.87 ± 1.27 106
14 5121 0.68 ± 0.05 9.10 ± 2.81 106
15 5516 2.94 ± 0.29 5.11 + 0.60 106
16 10,239 0.76 ± 0.06 7.37 + 2.46 106
17 5087 1.12 ± 0.02 14.26 ± 5.92 105
18 5433 0.95 ± 0.11 9.57 ± 4.46 106
19 6298 2.27 ± 0.13 6.07 ± 2.04 106
  1. Abbreviations: Mean, the peak area/intensity average; Rm, Robinson’s medium; DF, Dientamoeba fragilis; SD, standard deviation