| Positive ions | Negative ions | ||
| Assignment | m/z | Assignment | m/z |
| PC fragment | 58.1 | C16:1 | 253.2 |
| PC fragment | 86.1 | C16:0 | 255.2 |
| PC fragment | 184.1 | C18:1 | 281.2 |
| PC fragment | 476.4 | C18:0 | 283.3 |
| PC fragment | 478.4 | PA32:1 | 645.4 |
| Lyso-PC/PC fragment | 494.3 | PA32:0 | 647.4 |
| Lyso-PC/PC fragment | 522.3 | PG28:1 | 663.4 |
| Lyso-PC/PC fragment | 524.4 | PG28:0 | 665.4 |
| PC28:0+H | 678.5 | PG32:0 | 671.5 |
| PC30:0+H | 706.6 | PA34:1 | 673.5 |
| PC30:0+Na | 728.5 | PG32:0 | 721.5 |
| PC32:1+H | 732.6 | PG34:1 | 747.5 |
| PC32:0+H | 734.5 | PG36:2 | 773.5 |
| PC30:0+K | 744.5 | PG36:1 | 775.5 |
| PC32:1+Na | 754.5 | PI34:2 | 833.6 |
| PC32:0+Na | 756.5 | PI34:1 | 835.6 |
| PC34:1+H | 760.6 | PI36:2 | 861.6 |
| PC34:0+H | 762.6 | PI36:1 | 863.6 |
| PC32:1+K | 770.6 | ||
| PC32:0+K | 772.5 | ||
| PC34:1+Na | 782.5 | ||
| PC34:0+Na | 784.5 | ||
| PC34:1+K | 798.6 | ||
| PC34:0+K | 800.6 | ||
All mass (m)/charge (z) values correspond to singly charged monoisotopic ions. Molecular species of phospholipids are named x:a, where x is the number of carbons and a is the number of double bonds. Secondary ions are detected as protonated ions [M+H]+, sodiated ions [M+Na]+ and potassiated ions [M+K]+ in positive ionisation mode and deprotonated [M-H]- in negative ionisation mode. PC: phosphatidylcholine; C: free fatty acid; PA: phosphatidic acid; PG: phosphatidylglycerol; PI: phosphatidylinositol.