| PER | PERIOD |
|---|---|
| PER | Peak ejection rate |
| PER | Perchloroethylene |
| PER | protein efficiency ration |
| PER | proboscis extension reflex |
| PERC | Perchloroethylene |
| PerCP | Peridinin chlorophyll A protein |
| PERG | Pattern Electroretinogram |
| PERG | Pattern-reversal electroretinograms |
| PERK | Prospective Evaluation of Radial Keratotomy |
| PM/PM | per member per month |
|---|---|
| cpd | 1-cycle-per-degree |
| cpm | cycle per minute |
| AAPCC | Adjusted Average Per Capita Cost |
| CFU/ml | Colony Forming Units per ml |