Detection of cancer fetal fibronectin by simple immune assay

摘要

In the simple immunoassay, the cross-reaction with the plasma FN which is a similar antigen component of the fFN is suppressed, the detection of the plasma FN is reduced, and the error of the measurement value and the false positive reaction are prevented, so that the fFN can be accurately detected We will do it. When fFN and anti-fFN antibody are reacted in the presence of the specific surfactant of the present invention, even when other FNs such as plasma FN coexist, cross-reactivity between the antibody and FN is suppressed and fFN can be accurately detected. The specific surfactant is represented by the following general formula (1). Wherein m is 4 to 30, and R represents an alkyl group.