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Labsystems Diagnostics' Neonatal IRT FEIA is a fluorometric enzyme immunoassay for the quantitative determination of human immuno reactive trypsinogen (IRT) from blood samples dried on filter paper as a primary test for screening of babies for cystic fibrosis (CF).
IRT is eluted from dried blood disks simultaneously forming a sandwich between the solid phase, coated with an antibody that recognizes Trypsinogen-1 (IRT-1) and a second antibody, which is labeled with horseradish peroxidase (HRP).