| parent | Meperidine | LP16184-1 |
| child | Meperidine+Normeperidine | Serum or Plasma | Drug toxicology | LP389970-7 |
| child | Meperidine+Normeperidine | Urine | Drug toxicology | LP389971-5 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Meperidine+Normeperidine |
| DisplayName | en-US | Meperidine+Normeperidine |
LOINC Version: 2.81