| 11071-8 | Butalbital (Urine) |
| 12487-5 | Butalbital in Gastric fluid (qualitative) |
| 12497-4 | Butalbital (Stool, qualitative) |
| 16237-0 | Butalbital (Urine, confirmatory method) |
| 16498-8 | Butalbital in Gastric fluid |
| 18385-5 | Butalbital (Urine, qualitative, confirmatory method) |
| 19373-0 | Butalbital (Urine, qualitative, screen method) |
| 27246-8 | Butalbital (Stool) |
| 27912-5 | Butalbital (Hair) |
| 27927-3 | Butalbital in Vitreous fluid |
| 27962-0 | Butalbital in Meconium |
| 32055-6 | Butalbital |
| 32056-4 | Butalbital (Urine) |
| 32057-2 | Butalbital in Specimen (qualitative) |
| 3420-7 | Butalbital (qualitative) |
| 3421-5 | Butalbital (Urine, qualitative) |
| 35598-2 | Butalbital (screen method) |
| 6895-7 | Butalbital |
| 72398-1 | Butalbital (Blood, confirmatory method) |
| 72454-2 | Butalbital (oral fluid) (Saliva, confirmatory method) |
| 72632-3 | Butalbital (oral fluid) (Saliva, qualitative, confirmatory method) |
| 82971-3 | Butalbital, Plasma or Blood (confirmatory method) |
| 97224-0 | Butalbital in Cord tissue (qualitative, screen method) |
| 97225-7 | Butalbital in Cord tissue (qualitative, confirmatory method) |