| Abbreviation | Definition |
|---|---|
| PFI | Profits From Illness |
| PFK | PhosphoFructoKinase |
| PFN | Physicians Financial News |
| PFQ | Physicians For Quality |
| PFR | Peak Filling Rate |
| PFRG | Pelvic Floor Research Group |
| PFS | Physician Fee Schedule |
| PFS | Physicians Filing Service |
| PFSP | Physician and Family Support Program |
| PFTS | Pulmonary Function Tests |
| PFU | Plaque Forming Units |
| PG | Paregoric |
| PG | Pituitary Gland |
| PG | Postgraduate |
| PG | Pre Gestee |
| PG | Pregnant |
| PG | Prostaglandin |
| PGE | ProstaGlandin E |
| PGE2 | Prostaglandin E2 |
| PGF | Paternal Grandfather |