RA FACTOR (IGM) - TTSH Rabbit epithelium RANDOM URINE PORPHYRIN - NUH RAPID CLOSTRIDIUM DIFFICILE TOXIN - SGH rAra h 2 (recombinat, peanut) Red Blood Cell Count Red Cell Indices (MCV, MCH, MCHC) RENAL BIOPSY - EM - NUH RENAL BIOPSY - IMP - SGH RENAL BIOPSY - LM - SGH RENAL BIOPSY PANEL - NUH RENAL BIOPSY -SGH Renal Function - Basic (Electrolytes, Urine FEME & Urine Culture) Renal Function - Basic (Urine FEME, Urine Culture, Uric Acid & Total Cholesterol) Renal Function - Comprehensive Renal Function - Comprehensive with Total Cholesterol, Uric Acid & Urine FEME Renal Screen - Basic (Electrolytes) RENIN (PLASMA RENIN ACTIVITY) - CGH RENIN (PLASMA RENIN ACTIVITY) - NUH RESP SYNCYTIAL VIRUS CFT - SGH RESPIRATORY MULTIPLEX RT - PCR - KKH Respiratory Panel Multiplex PCR – FilmArray RESPIRATORY PNEUMONIA ANTIGEN PANEL -SGH RESPIRATORY VIRUS ANTIGEN PANEL 1 - SGH RESPIRATORY VIRUS ISOLATION - SGH RESPIRATORY VIRUS MULTIPLEX - SGH Reticulocyte Count Rheumatoid Factor Rice RICKETTSIA SEROLOGY PANEL - NUH RIS COFACTOR - SGH RISCOCETIN COFACTOR ASSAY - NUH Rose hip ROTA VIRUS ANTIGEN (EQA) - SGH rTri a 19; Omega-5 Gliadin (recomb, Wheat) Rubella IgG Antibody Rubella IgM Antibody Russian olive Rye