| RPHA | reversed passive hemagglutination |
|---|---|
| RPHAMFCA | reversed passive hemagglutination by miniature centrifugal fast analysis |
| PCA | para-chloramphetamine; parietal cell antibody; passive cutaneous anaphylaxis; patient care assistant... |
| RPA | radial photon apsorptiometry; replication protein A; resultant physiologic acceleration; reverse pas... |
| SRS-A | Slow Reacting Substance of Anaphylaxis |