| RBCGN | RAPID BLOOD CULTURE IDENTIFICATION (GRAM NEGATIVE) REFLEX TEST ONLY NorDx Laboratories | 
      
        | RBCGP | RAPID BLOOD CULTURE IDENTIFICATION (GRAM POSITIVE) REFLEX TEST ONLY NorDx Laboratories | 
      
        | RSVP | Rapid PCR Respiratory Syncytial Virus (RSV) NorDx Laboratories | 
      
        | CVDRP | Rapid PCR SARS-CoV-2 NorDx Laboratories | 
      
        | CVFLU | Rapid PCR SARS-CoV-2 and Flu A + B  NorDx Laboratories | 
      
        | TITR1 | RED BLOOD CELL ANTIBODY TITER NorDx Laboratories | 
      
        | AGTYP | RED CELL ANTIGEN TYPING NorDx Laboratories | 
      
        | RENFP | RENAL FUNCTION PANEL NorDx Laboratories | 
      
        | RPCWT / RPCWT-M | Renal Pathology Consultation, Wet Tissue Mayo Clinic Laboratories in Rochester | 
      
        | RENIN / PRA-M | Renin Activity, Plasma Mayo Clinic Laboratories in Rochester | 
      
        | RENPE / 500458-EX | RENIN, PEDIATRIC, PLASMA Esoterix Laboratory Services (LabCorp Specialty Testing Group) | 
      
        | REPTI | REPTILASE TIME, PLASMA NorDx Laboratories | 
      
        | RSVNA | Respiratory Syncytial Virus (RSV) by PCR NorDx Laboratories | 
      
        | RETIA | RETICULOCYTE COUNT, BLOOD NorDx Laboratories | 
      
        | RH | RH TYPE NorDx Laboratories | 
      
        | RFS | RHEUMATOID FACTOR, SERUM NorDx Laboratories | 
      
        | RNAP / RNAP-M | RNA Polymerase III Antibodies, IgG, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RNPAB / RNP-M | RNP Antibodies, IgG, Serum Mayo Clinic Laboratories in Rochester | 
      
        | ROSCR | ROTAVIRUS ANTIGEN, STOOL NorDx Laboratories | 
      
        | RUBEL | RUBELLA ANTIBODIES, (IgG), QUALITATIVE, SERUM NorDx Laboratories | 
      
        | RUIGM / 096537-LC | RUBELLA ANTIBODIES, (IgM), SERUM Laboratory Corporation of America (LabCorp) | 
      
        | RBPG / RBPG-M | Rubella Antibodies, IgG, Serum Mayo Clinic Laboratories in Rochester | 
      
        | RUBAB | RUBEOLA (MEASLES) ANTIBODIES, (IgG), SERUM NorDx Laboratories |