| parent | Narcotics | LP18149-2 |
| child | Alfentanil/Creatinine | LP284906-7 |
| child | Alfentanil | Blood | Drug toxicology | LP389816-2 |
| child | Alfentanil | Body fluid | Drug toxicology | LP389817-0 |
| child | Alfentanil | Hair | Drug toxicology | LP389818-8 |
| child | Alfentanil | Serum or Plasma | Drug toxicology | LP389819-6 |
| child | Alfentanil | Urine | Drug toxicology | LP389820-4 |
| parent | Narcotics | LP18149-2 |
| child | Alfentanil | Dose | Drug doses | LP392271-5 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Alfentanil |
| DisplayName | en-US | Alfentanil |
LOINC Version: 2.81