| BLOD0273 | Rabbit Epithelia Allergen Sanford Laboratories Sioux Falls | 
      
        | BLOD0516 | Rabies Antibody Endpoint RFFIT/K-State Rabies Laboratory Manhattan/K-State Innovation Center | 
      
        | BLOD0715 | Ragweed Common Allergen Sanford Laboratories Sioux Falls | 
      
        | NBLD0719 | Rapidly Progressive Dementia Evaluation, Spinal Fluid Mayo Clinic Laboratories in Rochester | 
      
        | BLOD1280 | Raspberry, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | BLOD1404 | Rat Epithelium, IgE, Serum Mayo Clinic Laboratories in Rochester | 
      
        | MICR0005 | Rectal Screen for Strep Sanford Laboratories Fargo | 
      
        | BLOD1166 | Red Blood Cell Antigen Type Sanford Laboratories Fargo | 
      
        | BLOD1419 | Red Cell Genotyping - Father Blood Center of Wisconsin | 
      
        | BLOD1731 | Red Cell Genotyping Panel Versiti | 
      
        | BLOD0751 | Redtop Bentgrass Allergen Sanford Laboratories Sioux Falls | 
      
        | NBLD0192 | Reducing Substance, Feces Mayo Clinic Laboratories in Rochester | 
      
        | BLOD1764 | Region 8 Respiratory Allergy Panel Sanford Laboratories Enterprise | 
      
        | BLOD1205 | Region X (10) Respiratory Allergy Panel & IgE Sanford Laboratories Sioux Falls | 
      
        | BLOD0531 | Renal Function Panel Sanford Laboratories Fargo | 
      
        | NBLD0543 | Renal Pathology Consultation, Wet Tissue Mayo Clinic Laboratories in Rochester | 
      
        | BLOD0499 | Renin Activity, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | BLOD1689 | Respiratory Allergy Panel Region 7 Sanford Laboratories Sioux Falls | 
      
        | BLOD1455 | Respiratory Panel Region 9 (KS, ND, NE, SD) & IgE Sanford Laboratories Sioux Falls | 
      
        | BLOD0660 | Reticulocyte Count Sanford Laboratories Fargo | 
      
        | NBLD0628 | Retinol-Binding Protein, Random, Urine Mayo Clinic Laboratories in Rochester | 
      
        | NBLD0449 | RF with Reflex, Synovial Fluid Quest Chantilly | 
      
        | BLOD0920 | Rh  Sanford Laboratories Fargo | 
      
        | BLOD1729 | Rheumatoid Factor Panel, Serum Mayo Clinic Laboratories in Rochester | 
      
        | BLOD0627 | Rheumatoid Factor Quantitative Sanford Laboratories Fargo |