| Abbreviation | Name | Description |
|---|---|---|
| FEIA | Enzyme immunoassay (EIA) | Enzyme immunoassay (EIA). A standard curve is used to calculate the specific IgG concentrations. The calibrators are referenced to the International Reference Preparation for serum immunoglobulins. This test has not been cleared or approved for diagnostic use by the U.S. Food and Drug Administration. |