Method comparison of two test kits for the determination of elastase/alpha 1-proteinase-inhibitor complex

A method comparison of the 4 h-elastase/alpha 1-proteinase-inhibitor test kit with a newly developed 2 h-version was performed. The within-run and between-days coefficients of variation as well as the recovery of the assigned values were satisfactory for both test kits. Good agreement was found between the 2 h- and 4 h-test kits using specimens from 160 patients. In conclusion, the 2 h-test kit can be used as an alternative for the determination of elastase/alpha 1-proteinase-inhibitor complex.