| AlWalnutTr | Walnut Tree, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | LAB3553 | Warfarin Prothrombin Time + INR Seattle Childrens Hospital | 
      
        | Al WaspVenm | Wasp Venom, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | Al Watrmeln | Watermelon, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | LAB299 | WBC Seattle Childrens Hospital | 
      
        |  | WBC Pyruvate Dehydrogenase Complex CIDEM | 
      
        | LAB867 | West Nile Virus Antibody, IgG and IgM, Serum Mayo Clinic Laboratories in Rochester | 
      
        | LAB3557 | West Nile Virus Nucleic Acid Test Bloodworks Northwest | 
      
        | Al Whey | Whey, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | LAB1632 | White Ash, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | LAB1612 | White Bean, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | Al WhHornVn | White Faced Hornet Venom, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | Al WhHickory | White Hickory, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | Al WhPotato | White Potato, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | LAB3558 | Wilm's Tumor Loss of Heterozygosity Nationwide Children's Hospital | 
      
        | LAB1926 | Wilson Disease Sequencing Seattle Childrens Hospital | 
      
        |  | Wiskott-Aldrich Syndrome Protein (WASP) Cincinnati Children's Hospital | 
      
        | LAB503 | Wound Culture - Deep Wound Seattle Childrens Hospital | 
      
        | LAB2585 | Wound, Hardware Associated Culture Seattle Childrens Hospital | 
      
        | LAB3559 | WT1 Single Gene Analysis PreventionGenetics |