| FSI | foam stability index; Food Sanitation Institute; functional status index; function status index |
|---|---|
| PDI | pain disability index; periodontal disease index; plan-do integration; psychomotor development index... |
| RPI | regional perfusion index; relative percentage index; reticulocyte production index, ribose 5-phospha... |
| VI | Roman numeral six; vaginal irrigation; variable interval; vastus intermedius; virgo intacta; virulen... |
| AST | allergy serum transfer; angiotensin sensitivity test; anterior spinothalamic tract; antistreptolysin... |