Table 3. Optimized detection of Indoleamines and IAA by Tandem Mass Spectrometry (Waters Xevo TQ-S).
| Cone voltage (V) | Collision voltage (V) | MRM Transition | |
| IAA | 30 | 25 | 176 > 103 |
| IAA | 30 | 13 | 176 > 130 |
| 5HT | 45 | 27 | 177 > 115 |
| 5HT | 45 | 10 | 177 > 160 |
| MEL | 30 | 23 | 233 > 159 |
| MEL | 30 | 15 | 233 > 174 |