| Carbamazepin | Zentrallabor LKH | |
| Carbamazepin (CDK) | Zentrallabor CDK | |
| Cariprazin | Zentrallabor LKH | |
| Chlorpromazin | Zentrallabor LKH | |
| Chlorprothixen | Zentrallabor LKH | |
| Citalopram & Metabolit Desmethylcitalopram | Zentrallabor LKH | |
| Clomethiazol | Zentrallabor LKH | |
| Clomipramin & Metabolit Norclomipramin | Zentrallabor LKH | |
| Clonazepam | Zentrallabor LKH | |
| Clozapin & Metabolit Desmethylclozapin | Zentrallabor LKH | |
| Coffein | Zentrallabor LKH | |
| Cyclosporin | Zentrallabor LKH | |