| PRAS | pre-reduced anaerobically sterilized [medium]; pseudo-renal artery syndrome |
|---|---|
| PRF | partial reinforcement; patient report form; perforin; plasma recognition factor; pontine reticular f... |
| PTRA | percutaneous transluminal renal angioplasty |
| RA | radioactive; ragocyte; ragweed antigen; rapidly adapting [receptors]; reactive arthritis; reciprocal... |
| RALPH | renal-anal-lung-polydactylyhamartoblastoma [syndrome] |