| Not official USP-NF text | ||||
| PRIMIDONE | ||||
| PF | LGS# | Brand | Type of Test | Additional Information |
| 0(0) | L1 | Atlantis C18 | Assay, identification, and related compounds | 4.6 mm x 10 cm. |
| 35(1) | L1 | Chromolith RP-18e | Identification and Related compounds | 4.6 mm x 10 cm. |
| 17(3) | G43 | None Cited | Organic volat. impurities | See Method V  467 |