| PIF | paratoid isoelectric focusing variant protein; peak inspiratory flow; proinsulin-free; prolactin-inh... |
|---|---|
| PIFR | peak inspiratory flow rate |
| pkV | peak kilovoltage |
| PNP | pancreatic polypeptide; para-nitrophenol; peak negative pressure; pediatric nurse practitioner; peri... |
| PPID | peak pain intensity difference [score] |