| 488 | Nitroprusside Reaction (qualitative, Urine), Cystine | Cystine Test System. |
| 488 | Nitroprusside Reaction (qualitative, Urine), Cystine | Cystine Test System. |
| K843382 | UROCYSTIN | MISSION PHARMACAL CO. |
| K810514 | SANDARE NITROPRUSSIDE TEST PROCEDURE | SANDARE CHEMICAL CO., INC. |