| Ref. | Anayte | LOD | Solvent |
| 24 | Cys | 1.96 μmol/L | DMSO/H2O |
| 25 | Cys | 64 nmol/L | DMSO/H2O |
| 26 | Cys | 31 nmol/L | DMSO/H2O |
| 27 | Cys | 20 nmol/L | DMF/H2O |
| This paper | Cys | 9.8 nmol/L | DMSO/H2O |