[Precision of blood alcohol determination using GC and ADH methods]

For the precision testing of the gas-chromatographic and the ADH-enzymatic method respectively we used commercially available control sera. During one year of testing (1990) they were daily and routinely used together with the specimen analysed. With the automatized GC-method the precision required according to the jurisdiction of the Bundesgerichtshof was better than with the manual ADH-method. The precision of the ADH-method should be improved using an autoanalyzer. Systematical errors between the two different methods (GC and ADH) can be minimized by a double GC-determination. Our investigation also aimed at a possible lower threatening threshold of 0.5% (BAK) as a consequence of the german "Wiedervereinigung". The precision for this concentration is 0.02% for the GC- and the ADH-method.