Percentages of monomeric, dimeric, and polymeric immunoglobulin G in intravenous immunoglobulin preparations
| . | Monomeric IgG (%) . | Dimeric IgG (%) . | Polymeric IgG (%) . |
|---|---|---|---|
| Fresh IVIG | 97.6 | 2.7 | 0.5 |
| Aged IVIG | 87.2 | 12.0 | 0.8 |
| Monomeric IgG | 99.5 | 0.4 | < 0.1 |
| . | Monomeric IgG (%) . | Dimeric IgG (%) . | Polymeric IgG (%) . |
|---|---|---|---|
| Fresh IVIG | 97.6 | 2.7 | 0.5 |
| Aged IVIG | 87.2 | 12.0 | 0.8 |
| Monomeric IgG | 99.5 | 0.4 | < 0.1 |
Analysis was performed by size exclusion chromatography using a calibrated Superose 12 gel filtration column connected to an FPLC system, as described in “Material and methods.”
IgG indicates immunoglobulin G; IVIG, intravenous immunoglobulin.