| PDRT | Portland Digit Recognition |
|---|---|
| PRA | panel-reactive antibody; phosphoribosylamine; physician recognition award; plasma renin activity; pr... |
| PRF | partial reinforcement; patient report form; perforin; plasma recognition factor; pontine reticular f... |
| SPR | sepiapterin reductase; serial probe recognition; specific pathogen free; Society for Pediatric Radio... |
| SRP | short rib-polydactyly [syndrome]; signal recognition particle; Society for Radiological Protection; ... |