| K874532 | BLOOD UREA NITROGEN | CATACHEM, INC. |
| K871320 | FLOW-PAC UREA NITROGEN REAGENT SET 2214, 2814 | AMERICAN RESEARCH PRODUCTS CO. |
| K863425 | AMRESCO FLOW PAC UREA NITROGEN REAGENTS #1346 | AMERICAN RESEARCH PRODUCTS CO. |
| K860419 | UREA NITROGEN REAGENT SET | STERLING DIAGNOSTICS, INC. |
| K850937 | UREA | DILAB, INC. |
| K844156 | UREA NITROGEN REAGENT SET | LIVONIA DIAGNOSTICS, INC. |
| K841068 | UREA NITROGEN REAGENT SET | MEDICAL SPECIALTIES, INC. |
| K822323 | ULTRACHEM BUN-UV, 65080 & 65081 | HARLECO DIAGNOSTICS |
| K821212 | UREA NITROGEN REAGENT SET | OMEGA MEDICAL ELECTRONICS |
| K813415 | UREA NITROGEN REAGENT SET | ANCO MEDICAL REAGENTS & ASSOC. |
| K802160 | BUN COLOR REAGENT & BUN ACID USED | PANMED, INC. |
| K800673 | SMAC REPLACEMENT REAGENTS/OF BUN-SERUM | DIAGNOSTIC SOLUTIONS, INC. |
| K781885 | SERUM, BLOOD UREA NITIOGEN | FISHER SCIENTIFIC CO., LLC. |
| K781305 | UREA NITROGEN | ANALYTICAL & RESEARCH CHEMICALS, INC. |
| K780262 | DIRECT UREA NITROGEN TEST | HYCEL, INC. |