[Immunoglobulin G level in the serum of patients with polyneuropathies]

In the serum of patients with polyneuropathies of various aetiology the immunoglobulin G level was determined quantitatively using the so-called disc precipitation test. Fifty serum samples were investigated. The IgG level was higher (p less than 0.05) in the group of patients with polyneuropathy as compared with the control group. No differences were observed in the IgG level between different types of polyneuropathy which may be due to small number of cases in various groups.