| parent | Butabarbital | LP16055-3 | 
| child | Butabarbital [Mass/volume] in Urine | 19370-6 | 
| child | Butabarbital [Mass/volume] in Urine by Confirmatory method | 16236-2 | 
| child | Butabarbital [Presence] in Urine | 3419-9 | 
| child | Butabarbital [Presence] in Urine by Confirmatory method | 16191-9 | 
| child | Butabarbital [Presence] in Urine by Screen method | 19368-0 | 
| child | Butabarbital cutoff [Mass/volume] in Urine for Confirmatory method | 19372-2 | 
| child | Butabarbital cutoff [Mass/volume] in Urine for Screen method | 19371-4 | 
| STATUS | NotStated | 
| PartDisplayName | en-US | Butabarbital | Urine | Drug toxicology | 
LOINC Version: 2.78