| ISI | International Sensitivity Index of reagent/instrument combination |
|---|---|
| ISS | International Staging System |
| IU | 1) International Unit; 국제단위 2) Immunizing Unit; 면역단위 |
| UNICEF | United Nations International Children's Emergency Fund; 국제연합아동구호기금 |
| ADI | Academy of Dentistry International; acceptable daily intake; AIDS-defining illness; allowable daily ... |