| Abbreviation | Definition |
|---|---|
| PSD | Payment Services Division |
| PSD(OC) | Payment Services Division (OC) |
| PSI | Pharmaceutical Society of Ireland |
| PSN | Patient Safety News (FDA) |
| PSNI | Pharmaceutical Society of Northern Ireland |
| PSP | Physician Special Pay |
| PSS | Patient Safety Staff |
| PSS(CDRH) | Patient Safety Staff (CDRH) |
| PSSB | Program Support Services Branch |
| PSSB(CFSAN) | Program Support Services Branch (CFSAN) |
| PST | Porcine SomatoTropin |
| PSUR | Periodic Safety Update Report |
| PT | Part Time |
| PT | Preferred Term |
| PTB | Pharmacology and Toxicology Branch |
| PTB(CBER) | Pharmacology and Toxicology Branch (CBER) |
| PTC | Parklawn Training Center |
| PTC | Points To Consider |
| PTCC | Pharmacology and Toxicology Coordinating Committee |
| PTE | Patent Term Extension |