| PGI | phosphoglucose isomerase; potassium, glucose, and insulin; prostaglandin I |
|---|---|
| PHI | passive hemagglutination inhibition; past history of illness; phosphohexose isomerase; physiological... |
| PRI | Pain Rating Index; phosphate reabsorption index; phosphoribose isomerase; placental ribonuclease inh... |
| RPI | regional perfusion index; relative percentage index; reticulocyte production index, ribose 5-phospha... |
| TIM | transthoracic intracardiac monitoring; triose phosphate isomerase |