Colloidal gold detection test paper for double-window detection of fecal occult blood and application of colloidal gold detection test paper

The invention relates to the technical field of immunodetection, and discloses colloidal gold test paper for double-window detection of fecal occult blood and application of the colloidal gold test paper. The reagent strip comprises a PVC (polyvinyl chloride) bottom plate as well as a sample pad, a marking pad, a nitrocellulose membrane and a water absorption pad which are arranged on the PVC bottom plate and are connected in sequence; from one side of the nitrocellulose membrane close to the marking pad, a T1 detection line and a C quality control line are sequentially arranged on the left side reagent strip, and a T2 detection line and a C quality control line are sequentially arranged on the right side reagent strip; the T1 detection line and the T2 detection line are coated with mouse anti-human hemoglobin monoclonal antibodies, and the labeling pad contains a mouse anti-human hemoglobin monoclonal antibody-colloidal gold conjugate; and the right reagent strip also contains a mouse anti-human hemoglobin m