| Oxcarbazepin & Metabolit 10-OH-Carbamazepin | Zentrallabor LKH | |
| Oxazepam | Zentrallabor LKH | |
| Opipramol | Zentrallabor LKH | |
| Olanzapin & Metabolit Desmethylolanzapin | Zentrallabor LKH | |
| Nitrazepam | Zentrallabor LKH | |
| N-Desmethylmesuximid | Zentrallabor LKH | |
| Moclobemid | Zentrallabor LKH | |
| Mirtazapin & Metabolit Desmethylmirtazapin | Zentrallabor LKH | |
| Milnacipran | Zentrallabor LKH | |
| Midazolam | Zentrallabor LKH | |
| Mianserin | Zentrallabor LKH | |
| Methylphenidat & Metabolit Ritalinsäure | Zentrallabor LKH | |
| Melperon | Zentrallabor LKH | |
| Maprotilin & Metabolit Normaprotilin | Zentrallabor LKH | |
| Lurasidon | Zentrallabor LKH | |
| Loxapin | Zentrallabor LKH | |
| Lorazepam | Zentrallabor LKH | |
| Levomepromazin | Zentrallabor LKH | |
| Levetiracetam (CDK) | Zentrallabor CDK | |
| Levetiracetam | Zentrallabor LKH | |
