The Diagnostic Automation Inc. Proteinase-3 (PR-3) ELISA kit is intended for the detection and semi-quantitative determination of antibodies to PR-3 in human sera. The assay is to be used to detect antibodies in a single serum specimen. The results of the assay are to be used as an aid in the diagnosis of Wegenerâ\\\'s granulomatosis. This test is for in vitro diagnostic use.