[A new ELISA micromethod for the determination of tetanus antibodies].

Due to its simplicity, accuracy and economy, the ELISA technique is a suitable method also for the determination of tetanus antibodies. By the method described, a titration curve is established from each serum to be investigated as well as from a standard serum. The horizontal distance between standard and unknown serum expressed in log2 titre steps is called titre difference. From this titre difference and the concentration of the standard serum the concentration of the unknown serum can be calculated. By means of an appropriate computer this evaluation can be done automatically. The variation coefficient with regard to concentration was 18.3%. A comparison with the toxin neutralisation test showed a correlation coefficient of 0.87. The application of this method to various problems is described.