
| TEST | SAMPLE TYPE | REPORT TIME |
| RA TEST | SERUM | FROM 2 TO 24 HOURS |
| RENAL CALCULUS | RENAL CALCULUS | FROM 2 TO 24 HOURS |
| RENIN | SERUM | FROM 2 TO 5 DAYS |
| RETICULIN IgA | SERUM | FROM 2 TO 7 DAYS |
| RETICULOCYTES | EDTA WHOLE BLOOD | FROM 2 TO 24 HOURS |
| RHESUS ANTIBODIES | SERUM | FROM 2 TO 24 HOURS |
| RICKETTSIA (WEIL FELIX) | SERUM | FROM 2 TO 24 HOURS |
| ROTA VIRUS (STOOLS) | STOOLS | FROM 2 TO 24 HOURS |
| RUBELLA IgG, IgM | SERUM | FROM 2 TO 24 HOURS |