| Precursor ion |  |  |  | Product ion |  |  |  |  |  |
---|---|---|---|---|---|---|---|---|---|---|
Compounds | Â | Â | Quantitation | Â | Â | Â | Reference | Â | Â | Retention time (min) |
 | m/z |  | Q1 | Collision | Q3 |  | Q1 | Collision | Q3 |  |
 |  | m/z | pre-bias | energy | pre-bias | m/z | pre-bias | energy | pre-bias |  |
 |  |  | (V) | (V) | (V) |  | (V) | (V) | (V) |  |
Tacrolimus | 821.5 | 768.3 | -30 | -22 | -22 | 576.2 | -30 | -22 | -30 | 0.735 |
[13Â C,2H4]-Tacrolimus | 826.5 | 773.4 | -30 | -22 | -22 | 581.4 | -30 | -22 | -30 | 0.735 |
Cyclosporin A | 1219.8 | 1202.9 | -36 | -19 | -32 | 1184.6 | -38 | -35 | -36 | 0.783 |
[2H12]-Cyclosporin A | 1231.7 | 1214.9 | -36 | -19 | -32 | 1196.8 | -38 | -35 | -36 | 0.780 |