Rickettsia typhi (Typhus Fever) Antibody, IgG by IFA Rett Syndrome (MECP2), Sequencing and Deletion/Duplication Rickettsia typhi (Typhus Fever) Antibody, IgM by IFA Rh Type Only Risk of Ovarian Malignancy Algorithm RhCc Antigen (RHCE) Genotyping Risperidone and Metabolite, Serum or Plasma Respiratory Viruses DFA with Reflex to Viral Culture, Respiratory RhD Antigen (RhD) Genotyping Ristocetin-Induced Platelet Aggregation Respiratory Viruses Rapid Culture RhEe Antigen (RHCE) Genotyping RNA Polymerase III Antibody, IgG RET Gene Rearrangements by FISH Rheumatoid Arthritis Panel RNP (U1) (Ribonucleic Protein) (ENA) Antibody, IgG RET-CCDC6 and RET-NCOA4 (RET-PTC1 and RET-PTC3) Translocations Detection by PCR Rheumatoid Arthritis Panel with Reflex to Rheumatoid Factors, IgA, IgG, and IgM by ELISA ROS1 by FISH Reticulin Antibody, IgA with Reflex to Titer
