The multitest system for delayed hypersensitivity evaluation. Standardized result in an Italian adult population.

Delayed hypersensitivity was evaluated by means of Multitest System in 50 healthy Italian adults. Results were checked for homogeneity, comparability and reliability assays. Strict antigen and technique standardization warranted closely homogeneous results. Booster effect did not occur. Data evaluation was not depending on individual reader. Multitest System appears to be the most reliable method to evaluate delayed hypersensitivity and cellular immunity in man.