| Not official USP-NF text | ||||
| PHENOBARBITAL | ||||
| PF | LGS# | Brand | Type of Test | Additional Information |
| 15(6) | L1 | MicroBondapak C18 | Assay | Reprinted 16(3) |
| 15(6) | L1 | MicroBondapak C18 | Identity | See Assay; reprinted 16(3) |
| 16(3) | G27 | None Cited | Organic volat. impurities | See Method I  467 |
| 18(1) | G43 | None Cited | Organic volat. impurities | See Method V 467 |