The iGFBP-1/fFN Combo Test Cassette (Vaginal secretion) is a fluorescence immunoassay for the quantitative detection of insulin-like growth factor-binding protein 1 (iGFBP-1) and fetal fibronectin (fFN) in human vaginal secretions during pregnancy. It is used to aid in the diagnosis of rupture of membranes (ROM) in pregnant women