title: [Preliminary comparative results of the detection of hepatitis B antigen (HBAg) in the blood of mental patients, using several methods in common use].
abstract: Radioimmunoassay (RIA), immunoelectrophoresis (IEP) and latex agglutination (L-HHA) were compared in the detection of hepatitis B antigen in sera from 494 mental patients. Positivity was observed in 39 subjects (7.9%) with RIA, 14 (2.8%) with IEP, and 8 (1.6%) with L-HHA. The dilution titres noted with RIA were many times and significantly higher than those obtained with the other two methods. Antigen was again detected in over 50% of those subjects on whom it was possible to repeat the tests one year later. The advantages of RIA are stressed.
mesh_terms: D003168:Complement Fixation Tests; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007122:Immunoelectrophoresis; D007841:Latex Fixation Tests; D001523:Mental Disorders / Q000150:complications*; D008722:Methods; D011863:Radioimmunoassay
vernacular_title: Risultati comparativi preliminari sulla ricerca dell'hepatitis B antigen (HBAg) nel siero di sangue di malati di mente con alcuni metodi di più comune impiego