| Abbreviation | Definition |
|---|---|
| RT | Reagent Type |
| RTAL | Real Time Analytical Laboratory |
| RTCL | Real Time Computing Laboratory |
| RTF | Research Task Force |
| RTI | Rapid Tube Input |
| RTPCR | Reverse Transcription Polymerase Chain Reaction |
| RTR | Relative Transmission Risk |
| RTSL | Real Time Systems Laboratory |
| RUA | Radioisotope Use Authorization |
| RUO | Research Use Only |
| RVG | Radionuclide VentriculoGram |
| RVI | Rubeola Virus Immunomodulator |
| RVP | Respiratory Viral Panel assay |
| RVS | Respiratory Virus Syndrome |
| RWJ | Robert Wood Johnson Medical School |
| RWLS | Regional West Laboratory Services |
| RXT | Radiation X-ray Therapy |
| RZV | RhiZidiomyces Virus |
| S | Specimen |
| S&A | Sugar and acetone |