| Abbreviation | Definition |
|---|---|
| OVST(CFSAN) | Operations and Veterinary Support Team (CFSAN) |
| OWH | Office of Women's Health |
| OWH(OC) | Office of Women's Health (OC) |
| P&PC | Production and Process Control |
| PA | Physical Activity |
| PAAB | Pharmaceutical Advertising Advisory Board (Canada) |
| PAB | Pharmaceutical Affairs Bureau (Japan) |
| PAB | Product Adulteration Branch |
| PAB(CFSAN) | Product Adulteration Branch (CFSAN) |
| PAC | Post-Approval Change |
| PAC | Private Analytical Certificate date |
| PAC | Program Assignment Code |
| PACE | Patient-centered Assessment and Counseling for Exercise |
| PAD | Pharmacologically Active Drug |
| PADE | Postmarketing Adverse Drug Experience |
| PADER | Periodic Adverse Drug Experience Report |
| PAER | Preliminary Adverse Event Report |
| PAFA | Priority-Based Assessment of Food Additives |
| PAG | Project Advisory Group |
| PAGE | PolyAcrylimide Gel Electrophoresis |