| Test Name (Click to sort by popular result) | COE Code |
| Warfarin Sensitivity Analysis | MLABEL |
| Warfarin, Serum | WRF |
| West Nile Virus Antibody, IgG & IgM, CSF | WNVC |
| Wolfram Syndrome (WFS1) Gene Sequencing | WFS1SS |
| Wound, AFB Culture | BAFB |
| Wound, Aerobic Culture | WDTSG |
| Wound, Anaerobe Culture | ANNC |
| Wound, Fungus Culture | FNG |