| PERG | pattern electroretinogram |
|---|---|
| POF | pattern of failure; position of function; premature ovarian failure; primary ovarian failure; pyruva... |
| PRVEP | pattern reversal visual evoked potential |
| PSP | pancreatic spasmolytic peptide; paralytic shellfish poisoning; parathyroid secretory protein; period... |
| PSVER | pattern shift visual evoked response |