| Name | Levomepromazine |
| Categories | neuroleptic |
| Specimen requirements | 2 ml of serum 1 ml of EDTA plasma |
| Storage and transport | postal dispatch possible |
| Clinical utility | Levomepromazine treatment and monitoring |
| Methodology | LCMS |
| Reference ranges | 30-160 μg/l, toxic starting at 320 μg/l |
| Remarks | Testing currently takes place in a contract laboratory |