| RABBIT | Rabbit Epithelium, IgE, Serum, LAB1519 St. Luke's Hospital Cedar Rapids | 
      
        | RBITFM | Rabbit Meat, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RBITSM | Rabbit Serum Proteins, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RBITUM | Rabbit Urine Proteins, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | FRFITM | Rabies Antibody Endpoint RFFIT/K-State Rabies Laboratory Manhattan/K-State Innovation Center | 
      
        | RASEM | Rape Seed, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | DUSC | Rapid Drug Screen, Urine, LAB676 St. Luke's Hospital Cedar Rapids | 
      
        | FLUABG | Rapid Influenza A/B Antigens, LAB924 UnityPoint Health Physician Office Laboratories, Cedar Rapids and surrounding area. | 
      
        | GPAAG | Rapid Strep Screen, LAB885 St. Luke's Hospital Cedar Rapids | 
      
        | RASURI | Rasburicase Uric Acid, LAB2920 St. Luke's Hospital Cedar Rapids | 
      
        | RASPBM | Raspberry, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RATM | Rat Epithelium, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RATSPM | Rat Serum Protein, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RATUPM | Rat Urine Protein, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RAVMP | Ravulizumab  Monitoring Panel, Serum Mayo Clinic Laboratories in Rochester | 
      
        | SORREL | Red Sorrel, IgE, Serum LAB2956 St. Luke's Hospital Cedar Rapids | 
      
        | REDSM | Reducing Substance, Feces Mayo Clinic Laboratories in Rochester | 
      
        | RENALF | Renal Function Panel - Fasting, LAB0019 St. Luke's Hospital Cedar Rapids | 
      
        | RENAL | Renal Function Panel, LAB19 St. Luke's Hospital Cedar Rapids | 
      
        | RENINM | Renin Activity, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | RESP21 | Respiratory FilmArray Panel, LAB3189 St. Luke's Hospital Cedar Rapids | 
      
        | RETLMW | Reticulocytes (EPIC LAB296) St. Luke's Hospital Cedar Rapids | 
      
        | RHIGSS | Rh Immune Globulin Workup, LAB2051 St. Luke's Hospital Cedar Rapids | 
      
        | FRFAC | Rhematoid Factor, Body Fluid Pathology Laboratory Des Moines, IA | 
      
        | RHUF | Rheumatoid Factor Pathology Laboratory Des Moines, IA |