| Abbreviation | Definition |
|---|---|
| IPA | Indicative Prescribing Amount |
| IPA | International Paediatrics Association |
| IPA | intrapulmonary artery |
| IPA | invasive pulmonary aspergillosis |
| IPHA | Irish Pharmaceutical Healthcare Association |
| IPR | immediate phase reaction |
| IPR | independent professional review |
| IPR | individual performance review |
| IPR | isoproterenol |
| IQAP | Information Quality Assurance Programme |
| IQC | instrument quality control |
| IQC | internal quality control |
| IQI | Indicators for Quality Improvement |
| IQPI | Improvement Quality Practice Income |
| IR | immune response |
| IR | immunoreactive |
| IR | interim report |
| IR | internal rotation Rehabilitation medicine |
| IR | inversion recovery Imaging MRI |
| IR | inverted repeat Molecular biology |