| parent | Phenytoin.free | LP14731-1 |
| child | Phenytoin.free/Phenytoin.total | Serum or Plasma | Drug toxicology | LP390837-5 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Phenytoin.free/Phenytoin.total |
| DisplayName | en-US | Phenytoin.free/Phenytoin.total |
LOINC Version: 2.78