| Triglyceride | 15099590011093 | Class B | |
| Triglyceride | 15099590060145 | Class B | |
| UIBC | 15099590011925 | Class B | |
| UniCel DxH SMS II Coulter Cellular Analysis | 15099590701567 | Class A | |
| UniCel DxI 600 Access Immunoassay System | 15099590341602 | Class A | |
| UniCel DxI 600 Access Immunoassay System w/Spot B | 15099590369224 | Class A | |
| UniCel DxI 800 Access Immunoassay System | 15099590265373 | Class A | |
| UniCel DxI 800 Access Immunoassay System w/Spot B | 15099590369194 | Class A | |
| "UniCel DxI Access Wash Buffer II" | 15099590201906 | Class A | |
| UniCel DxI Immunoassay System Reaction Vessels | 15099590229979 | Class A | |
| "UniCel DxI Wash Buffer II" | 15099590206734 | Class A | |
| Universal Caps for Universal Recapper (v3.0 and later), 500/bag | 15099590686710 | Class A | |
| Urea | 15099590010317 | Class B | |
| Urea | 15099590020163 | Class B | |
| Urea | 15099590060114 | Class B | |
| Urea STAT | 15099590010386 | Class B | |
| Urea STAT | 15099590060213 | Class B | |
| Uric Acid | 15099590000349 | Class B | |
| Uric Acid | 15099590010942 | Class B | |
| Uric Acid | 15099590020385 | Class B | |
| Uric Acid | 15099590060152 | Class B | |
| Urinary/CSF Protein | 15099590010676 | Class B | |
| Urinary/CSF Protein | 15099590020347 | Class B | |
| Vigil Lipid Control Level 1 | 15099590221270 | Class B | |
| Vigil Lipid Control Level 2 | 15099590222925 | Class B | |
UDI Compass