| Not official USP-NF text | ||||
| SPIRONOLACTONE | ||||
| PF | LGS# | Brand | Type of Test | Additional Information |
| 0(0) | L1 | TSK-GEL ODS-80Tm | Assay | 4.6 mm x 15 cm, manufacturer Tosoh Corp. |
| 27(3) | L1 | MicroBondapak C18 | Assay | 3.9 mm x 30 cm, manuf. Waters. |
| 7(3) | L1 | MicroBondapak C18 | Assay | NULL |
| 17(3) | G43 | None Cited | Organic volat. impurities | See Method V  467 |