| PAI | Pathogenicity Island |
|---|---|
| PAI | Personality Assessment Inventory |
| PAI | Physical Activity Index |
| PAI | Plasminogen Activator Inhibitors |
| PAI | Plasminogen activator inhibition |
| PAI | Plasminogen activator inhibitor activity |
| PAI 1 | Plasminogen Activator Inhibitor type 1 |
| PAI-1 | Plaminogen Activator Inhibitor-1 |
| PAI-1 | PA inhibitor -1 |
| PAI-1 | PA inhibitor type 1 |