Table 1. Prospective ratio biomarkers selected by ATSD-DN.
| Lipids 1 (Numerator) | Mode | m/z | m/z error (ppm) | tR (min) | Lipids 2 (Denominator) | Mode | m/z | m/z error (ppm) | tR (min) |
p value |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C16 vs. M16 | C18 vs. M18 | C20 vs. M20 | M14 vs. M16 | M14 vs. M18 | M14 vs. M20 | ||||||||||
| LPC 16:0 | Pos | 496.3398 | 3 | 1.71 | FFA 20:5 | Neg | 301.2173 | −2.8 | 1.51 | 7.25E-03 | 6.91E-04 | 4.57E-02 | 1.59E-02 | 3.01E-03 | 7.84E-03 |
| PC 34:2 | Pos | 758.5695 | 4 | 6.84 | 1.45E-03 | 7.43E-04 | 4.28E-03 | 4.17E-02 | 1.13E-02 | 2.43E-02 | |||||
| LPC 18:1 | Pos | 522.3554 | 3.6 | 1.81 | 6.39E-04 | 3.68E-04 | 1.52E-02 | 9.05E-03 | 4.09E-03 | 1.29E-02 | |||||
| LPC 20:3-isomer2 | Pos | 546.3554 | −0.1 | 1.67 | 1.81E-02 | 4.52E-04 | 4.15E-02 | 7.96E-03 | 4.35E-03 | 1.96E-02 | |||||
These lipids were identified based on the accurate m/z, retention behavior and MS/MS fragmentation pattern.