©The Author(s) 2025.
World J Gastrointest Oncol. Sep 15, 2025; 17(9): 109777
Published online Sep 15, 2025. doi: 10.4251/wjgo.v17.i9.109777
Published online Sep 15, 2025. doi: 10.4251/wjgo.v17.i9.109777
Table 1 Stability of internal standard responses in quality control samples
| Internal standard | Retention time | Mass-to-charge ratio (mz) | RSD |
| IS1 | 222.6 | 121.0439 | 0.0374 |
| IS2 | 159.2 | 133.1057 | 0.0262 |
| IS3 | 231.2 | 152.0591 | 0.0662 |
| IS4 | 28.5 | 127.0805 | 0.0444 |
| IS5 | 160.4 | 127.1428 | 0.0466 |
| IS6 | 157.5 | 135.1208 | 0.029 |
- Citation: Zhu LH, Jin ZX, Ma YQ, Feng X, Ci CH, Zhou YS, Gu QL, Lan YM, Zhang ZL. Untargeted metabolomics analysis of metabolite changes in gastric cancer patients from plateau regions. World J Gastrointest Oncol 2025; 17(9): 109777
- URL: https://www.wjgnet.com/1948-5204/full/v17/i9/109777.htm
- DOI: https://dx.doi.org/10.4251/wjgo.v17.i9.109777