| Phenobarbital | Zentrallabor | |
| Phenylethylmalonamid (PEMA) | Zentrallabor | |
| Phenytoin | Zentrallabor | |
| Pimozid | Zentrallabor | |
| Posaconazol | Zentrallabor | |
| Pregabalin | Zentrallabor | |
| Primidon | Zentrallabor | |
| Promethazin | Zentrallabor | |
| Prothipendyl | Zentrallabor | |
| Prothrombingehalt (PZ, PTZ, Quick) | Zentrallabor | |
| Prothrombinzeit-INR (PZ-INR) aus Kapillarblut | Zentrallabor | |
| Prothrombinzeit-INR (PZ-INR) venös | Zentrallabor | |
| Quetiapin & Metabolit Norquetiapin | Zentrallabor | |
| Reboxetin | Zentrallabor | |
| Retigabin | Zentrallabor | |
| Risperidon & Metabolit 9-Hydroxy-Risperidon | Zentrallabor | |
| Ritalinsäure | Zentrallabor | |
| Rufinamid | Zentrallabor | |
| Salicylat | Zentrallabor | |
| Sertindol | Zentrallabor | |