1. As far as specificity is concerned, we have never encountered false-positive results although the eluates contained whole blood instead of serum. Sensitivity is not a problem for HBsAgdetermination. The failure of the method to give positive results when antibody titre in serum was less than 1/100 is probably related to the dilution of the small quantity of blood (about 50;Vyas, G.N.; Szmuness, W.; Harley, E.J.; lkram H; Stevens,1978
2. Hepatitis BeAg, DNA polymerase activity and infection of household contacts with hepatitis B virus. Gastroenterolog';Per., illo R.P.; L, Gelb; C, Campbell; ct al,1979