Serology of cohort of patients with primary Sjögren’s syndrome (percentages in brackets)
| ANA, antinuclear antibodies. | |
| ANA >1:80 | 84/114 (73.7) |
| Rheumatoid factor | 76/113 (67.3) |
| Ro (SS-A) | 63/113 (55.8) |
| La (SS-B) | 45/113 (39.8) |
| Hypergammaglobulinaemia | 67/114 (58.8) |
| Increased IgG | 56/114 (49.1) |
| Increased IgA | 25/114 (21.9) |
| Increased IgM | 12/114 (10.5) |
| Hypogammaglobulinaemia | 4/114 (3.5) |
| Decreased IgG | 4/114 (3.5) |
| Decreased IgA | 1/114 (0.9) |
| Decreased IgM | 1/114 (0.9) |