| RFFIT | rapid fluorescent focus inhibition test |
|---|---|
| RFH | right femoral hernia |
| RFI | Renal Failure Index Urine Na = ---------------------- Urine Cr / Plasma Cr |
| RFI | radiofrequency interference; recurrence-free interval; renal failure index |
| RFL | right frontolateral [fetal position] |
| RFLA | rheumatoid-factor-like activity |
| RFLP | restriction fragment length polymorphism |
| RFLPs | Restriction Fragment Length Polymorphisms; 제한효소단편장다형 |
| RFLS | rheumatoid-factor-like substance |
| Rfm | rifampin |