Skin checks along with medicine provocation tests All twenty-two patients underwent epidermis exams and also 3 ended up positive, 2 to a single BL only (ticarcillin as well as piperacillin) and something two different BLs (ceftazidime and also imipenem). Almost all skin responses came out in the web site of the intradermal examination: that they happened with the concentration of 25?mg/ml for pipe