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 Rheumatoid Factor ROS1 with Interpretation by Immunohistochemistry with Reflex to FISH if Equivocal Reticulocyte, Hemoglobin Panel Rheumatoid Factor, Body Fluid Reticulocytes, Percent and Number Rheumatoid Factors, IgA, IgG, and IgM by ELISA Retinitis Pigmentosa/Leber Congenital Amaurosis Deletion/Duplication, 53 Genes Ribosomal P Protein Antibody Retinitis Pigmentosa/Leber Congenital Amaurosis Panel, Sequencing and Deletion/Duplication, 53 Genes Rickettsia rickettsii (Rocky Mountain Spotted Fever) Antibodies, IgG & IgM by IFA Retinitis Pigmentosa/Leber Congenital Amaurosis Sequencing, 53 Genes Rickettsia rickettsii (Rocky Mountain Spotted Fever) Antibody, IgG