| BLOOD UREA NITROGEN (K874532) | Catachem, Inc. | 1988-01-05 |
| FLOW-PAC UREA NITROGEN REAGENT SET 2214, 2814 (K871320) | American Research Products Co. | 1987-04-22 |
| AMRESCO FLOW PAC UREA NITROGEN REAGENTS #1346 (K863425) | American Research Products Co. | 1986-10-01 |
| TWIN BUN/GLUCOSE (K861775) | Boehringer Mannheim Corp. | 1986-06-27 |
| UREA NITROGEN REAGENT SET (K860419) | Sterling Diagnostics, Inc. | 1986-02-11 |
| UREA (K850937) | Dilab, Inc. | 1985-06-10 |
| UREA NITROGEN REAGENT SET (K844156) | Livonia Diagnostics, Inc. | 1984-11-13 |
| UREA NITROGEN REAGENT SET (K841068) | Medical Specialties, Inc. | 1984-05-01 |
| ULTRACHEM BUN-UV, 65080 & 65081 (K822323) | Harleco Diagnostics | 1982-09-02 |
| UREA NITROGEN REAGENT SET (K821212) | Omega Medical Electronics | 1982-07-22 |
| UREA NITROGEN REAGENT SET (K813415) | Anco Medical Reagents & Assoc. | 1981-12-31 |
| BUN COLOR REAGENT & BUN ACID USED (K802160) | Panmed, Inc. | 1980-10-10 |
| SMAC REPLACEMENT REAGENTS/OF BUN-SERUM (K800673) | Diagnostic Solutions, Inc. | 1980-05-28 |
| SERUM, BLOOD UREA NITIOGEN (K781885) | Fisher Scientific Co., LLC | 1978-12-20 |
| UREA NITROGEN (K781305) | Analytical & Research Chemicals, Inc. | 1978-08-31 |
| DIRECT UREA NITROGEN TEST (K780262) | Hycel, Inc. | 1978-04-05 |
| BLOOD UREA NITROGEN BUN (K771830) | Gamma Enterprises, Inc. | 1977-10-25 |
| BLOOD UREA NITROGEN (BUN) REAGENT (K771312) | Mallinckrodt Critical Care | 1977-08-03 |
| UNIPAK BUN (K771087) | Harleco | 1977-07-21 |
| WORTHINGTON BUN (K770470) | Worthington Biochemical Corp. | 1977-06-02 |
| REAGENT, BUN (UREA NITROGEN) DETERM. (K760478) | Simmler & Son, Inc. | 1976-10-29 |