| RAICHEM(TM) UREA NITROGEN (COLOR) REAGENT (K896845) | Reagents Applications, Inc. | 1990-02-16 |
| STANBIO ENZYMATIC UREA NITROGEN DETERMINAT #2010 (K893128) | Stanbio Laboratory | 1989-07-25 |
| COLORIMETRIC BUN REAGENT KIT (K871651) | Biochemical Trade, Inc. | 1987-05-12 |
| UREA NITROGEN(BUN), COLORIMETRIC METHOD (K864742) | Tech-Co, Inc. | 1987-01-13 |
| UREA NITROGEN TEST (K863889) | U. S. Diagnostics, Inc. | 1986-11-24 |
| UREAFAST (K863076) | J. D. Assoc. | 1986-09-09 |
| BUN (ENZYMATIC BERTHELOT) REAGENT SET (K860154) | Sterling Diagnostics, Inc. | 1986-02-06 |
| COLORIMETRIC BUN (K831414) | Bio-Analytics Laboratories, Inc. | 1983-06-16 |
| UREA NITROGEN REAGENT SET (MOD. BERTHEL (K822237) | Sterling Biochemical, Inc. | 1982-08-16 |
| EUROCHIMA UREA NITROGEN (K810261) | Volu Sol Medical Industries | 1981-02-10 |
| DATA-ZYME UREA NITROGEN, COLORIMETRIC (K801727) | Data Medical Associates, Inc. | 1980-09-09 |
| BUN-COLOR 2, BLOOD UREA NITROGEN TEST (K800902) | Sclavo, Inc. | 1980-06-09 |
| ELVI BLOOD UREA NITROGEN (K792417) | Volu Sol Medical Industries | 1979-12-07 |
| UREA NITROGEN TEST (K781899) | Wako Intl., Inc. | 1978-12-20 |
| UREA NITROGEN TEST KIT (K781306) | Analytical & Research Chemicals, Inc. | 1978-08-31 |
| S-UREA-N, IN VITRO DIAG FOR BUN (K761152) | Advanced Biomedical Methods, Inc. | 1976-12-09 |