| REPII | Rabbit Epithelium, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RAMB | Rabbit Meat, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | FRFIT | Rabies Antibody Endpoint RFFIT/K-State Rabies Laboratory Manhattan/K-State Innovation Center | 
      
        | RASE | Rape Seed, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | COVID RAPID | Rapid Covid-19 FMH Laboratory | 
      
        | BRTP | Rapid Hereditary Breast Cancer Treatment Decision Panel, Varies Mayo Clinic Laboratories in Rochester | 
      
        | RSBV | Rare Subepithelial Autoimmune Blistering Disease Variants, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RASP | Raspberry, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RAVMP | Ravulizumab  Monitoring Panel, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RAVU | Ravulizumab, Serum Mayo Clinic Laboratories in Rochester | 
      
        | NCYB | Recessive Congenital Methemoglobinemia, CYB5 and CYB5 Reductase Genetic Analysis, Next-Generation Sequencing, Varies Mayo Clinic Laboratories in Rochester | 
      
        | RCVBS | Recoverin-IgG Antibody, Immunoblot, Serum Mayo Clinic Laboratories in Rochester | 
      
        | EEEV1 | Red Blood Cell (RBC) Enzyme Evaluation, Blood Mayo Clinic Laboratories in Rochester | 
      
        | NENZ | Red Blood Cell Enzyme Disorders Gene Panel, Next-Generation Sequencing, Varies Mayo Clinic Laboratories in Rochester | 
      
        | NMEM | Red Blood Cell Membrane Disorders Gene Panel, Next-Generation Sequencing, Varies Mayo Clinic Laboratories in Rochester | 
      
        | RBCME | Red Blood Cell Membrane Evaluation, Blood Mayo Clinic Laboratories in Rochester | 
      
        | SORR | Red Sorrel, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | UREDF | Reducing Substance, Feces Mayo Clinic Laboratories in Rochester | 
      
        | RFP | Renal Function Panel FMH Laboratory | 
      
        | PRA | Renin Activity, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | RTSC | Reptilase Time, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | RESP PCR | Respiratory Panel PCR FMH Laboratory | 
      
        | RPR18 | Respiratory Profile, Region 18, Alaska, Serum Mayo Clinic Laboratories in Rochester | 
      
        | Retic | Reticulocyte Count FMH Laboratory | 
      
        | RB24 | Retinol-Binding Protein, 24 Hour, Urine Mayo Clinic Laboratories in Rochester |