| EMIT | enzyme multiplied immunoassay technique |
|---|---|
| FPIA | fluorescence polarization immunoassay |
| HEI | Health Effects Institute; high-energy intermediate; homogenous enzyme immunoassay; human embryonic i... |
| HII | Health Industries Institute; Health Insurance Institute; hemagglutination inhibitor immunoassay |
| iPTH | immunoassay for parathyroid hormone; immunoreactive parathyroid hormone |