[The use of the XAD-2 and XAD-4 isolation technics in toxicologic studies].

The aim of investigations reported was to compare analytic values obtained by XAD-2 and XAD-4 technique of isolation and by the method of extraction. Fifteen different drugs added to normal blood specimens and blood obtained from intoxication cases were examined. Results indicate that the XAD column technique provides more reliable values than the method of extraction by solvents, which in addition are very expensive. Between analytic values obtained by XAD-2 and XAD-3 columns no significant difference could be revealed.