| OALF | organic acid labile fluid |
|---|---|
| PA | partial pressure of arterial fluid |
| PAFD | percutaneous abscess and fluid drainage; pulmonary artery filling defect |
| Parkinson's Disease Foundation; peritoneal dialysis fluid; Portable Document Format; pyruvate dehydr... | |
| PEF | peak expiratory flow; Psychiatric Evaluation Form; pulmonary edema fluid |