| FSI | foam stability index; Food Sanitation Institute; functional status index; function status index |
|---|---|
| HCI | Health Commons Institute; human collagenase inhibitor |
| HEI | Health Effects Institute; high-energy intermediate; homogenous enzyme immunoassay; human embryonic i... |
| HMRI | Hospital Medical Record Institute |
| IAP | immunosuppressive acidic protein; inosinic acid pyrophosphorylase; Institute of Animal Physiology; i... |