Table 1.
Peptide m/z values and retention times associated with the peptides selected for semi‐quantitative analysis of a large plasma cohort study
| Diagnostic plasma peptides | ||||
|---|---|---|---|---|
| Peptide | Molecular weight | Charge | m/z ions monitored (±0.01) | RT (min) |
| Glucagon | 3480.6 | 4 | 871.16, 871.41, 871.66, 871.91 | 4.96 |
| Proglucagon 72–108 | 4167.0 | 6 | 695.51, 695.67, 695.84, 696.17, 696.01 | 5.81 |
| CHGA 97–131 | 3905.7 | 4 | 977.45, 977.70, 977.95, 978.20, 978.45 | 4.17 |
| CHGA 358–390 | 3768.7 | 6 | 629.14, 629.31, 629.48, 629.64, 629.81 | 2.42 |
| CHGA 413–456 | 5060.5 | 6 | 844.43, 844.60, 844.77, 844.93, 845.10, 845.27 | 5.46 |
| CHGA 420–456 | 4229.1 | 6 | 705.87, 706.04, 706.20, 706.37, 706.54 | 5.87 |
| CHGB 600–613 | 1743.8 | 2 | 872.94, 873.44, 873.94 | 4.72 |
| SCG2 569–610 | 4982.4 | 6 | 831.42, 831.59, 831.76, 831.92, 832.09, 832.26 | 5.01 |
| Normal plasma peptides | ||||
| Peptide | Molecular weight | Charge | m/z ions monitored (±0.01) | RT (min) |
| Insulin | 5803.6 | 5 | 1161.94, 1162.14, 1162.34, 1162.54, 1162.74 | 5.36 |
| C‐peptide | 3018.5 | 3 | 1007.18, 1007.52, 1007.85, 1008.18 | 5.10 |
| IGF‐1 | 7644.6 | 7 | 1093.52, 1093.67, 1093.81, 1093.95 | 4.66 |
| IGF‐2 | 7464.5 | 7 | 1067.79, 1067.94, 1068.08, 1068.23 | 4.36 |
| Hepcidin 25 | 2787.0 | 4 | 697.76, 698.01, 698.26, 698.51 | 3.47 |
| Bovine insulin | 5729.6 | 5 | 1147.33, 1147.53, 1147.73, 1147.93 | 5.21 |