Stability of antibody responses to Helicobacter pylori antigens over 21 years in 95 subjects* who were IgG seropositive in 1973
| No of subjects positive in that assay | Antibody level | |||
|---|---|---|---|---|
| Assay | 1973 | 1994 | 1973 | 1994 |
| *In 95 subjects (mean age 35.0 (12.0) years) who were IgG seropositive in 1973. | ||||
| †Shown as reciprocal geometric mean titres (RGMT). | ||||
| ‡Shown as mean optical density ratio units (SD). | ||||
| H pylori IgG† | 95 | 87 | 3179 | 3009 |
| H pylori IgA† | 59 | 54 | 180 | 201 |
| CagA IgG‡ | 69 | 69 | 0.75 (0.24) | 0.80 (0.21) |