| 0099132 | Rabies Antibody, IgG (Vaccine Response) |
| 0050302 | Raji Cell Immune Complex Assay |
| 2007443 | Rapid Plasma Reagin (RPR) with Reflex to RPR Titer or T. pallidum Antibody by Particle Agglutination |
| 0050471 | Rapid Plasma Reagin (RPR) with Reflex to Titer |
| 0050478 | Rapid Plasma Reagin (RPR) with Reflex to Titer and TP-PA Confirmation |
| 0050011 | Rapid Plasma Reagin (RPR) with Reflex to Titer, FTA-ABS and TP-PA |
| 2002730 | RASA1-Related Disorders (RASA1) Sequencing |
| 2007830 | RASA1-Related Disorders (RASA1) Deletion/Duplication |
| 2007852 | RASA1-Related Disorders (RASA1) Sequencing and Deletion/Duplication |
| 2006519 | Recurrent Gastrointestinal Distress Profile |
| 0040270 | Red Blood Cell Count |
| 0020373 | Reducing Substances, Fecal |
| 2004124 | Renal Cell Carcinoma (RCC) Antigen by Immunohistochemistry |
| 0020144 | Renal Function Panel |
| | Renal Pathology Special Studies |
| 0070105 | Renin Activity |
| 2001575 | Renin, Direct |
| 0030295 | Reptilase Time with Reflex to Reptilase Time 1:1 Mix |
| 0060122 | Respiratory Culture and Gram Stain |
| 0051087 | Respiratory Syncytial Virus Antibodies, IgG & IgM |
| 0051085 | Respiratory Syncytial Virus Antibody, IgG |
| 0051086 | Respiratory Syncytial Virus Antibody, IgM |
| 0060288 | Respiratory Syncytial Virus DFA |
| 0060764 | Respiratory Virus Mini Panel by RT-PCR |
| 2007805 | Respiratory Virus Panel by PCR |
| 0060289 | Respiratory Viruses DFA |
| 2002565 | Respiratory Viruses DFA with Reflex to Respiratory Virus Mini Panel by RT-PCR |
| 0060281 | Respiratory Viruses DFA with Reflex to Viral Culture, Respiratory |
| 2001504 | Respiratory Viruses Rapid Culture |
| 0050698 | Reticulin Antibody, IgA with Reflex to Titer |
| 0098878 | Reticulin Antibody, IgG with Reflex to Titer |
| 0040263 | Reticulocytes, Cellular Hb |
| 0040022 | Reticulocytes, Percent & Number |
| 2007095 | Retinitis Pigmentosa/Leber Congenital Amaurosis Deletion/Duplication, 53 Genes |
| 2007085 | Retinitis Pigmentosa/Leber Congenital Amaurosis Panel, Sequencing and Deletion/Duplication, 53 Genes |
| 2007091 | Retinitis Pigmentosa/Leber Congenital Amaurosis Sequencing, 53 Genes |
| 0050467 | Retinol Binding Protein |
| 0051618 | Rett Syndrome (MECP2), Deletion and Duplication |
| 0051378 | Rett Syndrome (MECP2), Full Gene Sequencing |
| 0051614 | Rett Syndrome (MECP2), Sequencing and Deletion/Duplication |
| 0013014 | Rh Type Only |
| 0050421 | RhCc Antigen (RHCE) Genotyping |
| 0051368 | RhD Antigen (RhD) Genotyping |
| 0050423 | RhEe Antigen (RHCE) Genotyping |
| 2003277 | Rheumatoid Arthritis Panel |
| 2003278 | Rheumatoid Arthritis Panel with Reflex to Rheumatoid Factors, IgA, IgG, and IgM by ELISA |
| 0050465 | Rheumatoid Factor |
| 2003347 | Rheumatoid Factor, Body Fluid |
| 0051298 | Rheumatoid Factors, IgA, IgG, and IgM by ELISA |
| 0099249 | Ribosomal P Protein Antibody |
| 0050371 | Rickettsia rickettsii (Rocky Mountain Spotted Fever) Antibodies, IgG & IgM by IFA |
| 0050369 | Rickettsia rickettsii (Rocky Mountain Spotted Fever) Antibody, IgG |
| 0050372 | Rickettsia rickettsii (Rocky Mountain Spotted Fever) Antibody, IgM |
| 0050384 | Rickettsia typhi (Typhus Fever) Antibodies, IgG & IgM by IFA |
| 0050381 | Rickettsia typhi (Typhus Fever) Antibody, IgG by IFA |
| 0050383 | Rickettsia typhi (Typhus Fever) Antibody, IgM by IFA |
| 2007951 | Risperidone and Metabolite, Serum or Plasma |
| 2003382 | Ristocetin-Induced Platelet Aggregation |
| 2001601 | RNA Polymerase III Antibody, IgG |
| 0050470 | RNP (U1) (Ribonucleic Protein) (ENA) Antibody, IgG |
| 0065067 | Rotavirus and Adenovirus 40-41 Antigens |
| 0065088 | Rotavirus Antigen by EIA |
| 0050552 | Rubella Antibodies, IgG and IgM |
| 0050771 | Rubella Antibody, IgG |
| 0050551 | Rubella Antibody, IgM |
| 2003176 | Rufinamide, Serum or Plasma |
| 0050444 | RUNX1-RUNX1T1 (AML1-ETO) Translocation, t(8;21) by RT-PCR |
