| Abbreviation | Definition |
|---|---|
| PERI | Pharmaceutical Education and Research Institute |
| PERT | Product-Enhanced Reverse Transcriptase |
| PERV | Porcine Endogenous Retrovirus |
| PET | Poly-Ethylene Terephthalate |
| PETA | People for the Ethical Treatment of Animals |
| PETG | polyethylene terephthalate G |
| PFGE | Pulsed-Field Gel Electrophoresis |
| PFI | Pet Food Institute |
| PFL | Professional Flexible Labeling |
| PFO | Principal Federal Official |
| PFS | Piper Fatigue Scale |
| PGB | Policy Guidance Branch |
| PGB(CFSAN) | Policy Guidance Branch (CFSAN) |
| PHA | Public Health Advisory |
| PHI | Protected Health Information |
| PHIN | Public Health Information Network |
| PHN | Population, Health, and Nutrition Center |
| PHPPO | Public Health Practice Program Office |
| PHPS | Public Health Prevention Service |
| PhRMA | Pharmaceutical Research and Manufacturers of America |