Magnetic immuno-chromatographic test paper strip for quantitatively detecting carcinoembryonic antigen in blood and preparation method thereof

The invention relates to a magnetic immuno-chromatographic test paper strip for quantitatively detecting carcinoembryonic antigen in blood and a preparation method thereof. A coating film, a magnet particle pad combined with CEA antibodies, a sample pad and a water absorbing pad are sequentially and alternately stuck on a base plate in a staggering way at intervals of 2mm, and then the upper layer is covered by a transparent plastic sealing film to form a test paper strip. A CEA antibody detection line and a quality control line are pre-coated on the coating film. The invention introduces the magnetic immuno-chromatographic technology and the biotin-aviden system into the quantitative detection of CEA in blood, and has the advantages that the detection sensitivity is greatly improved, the accurate quantitative results can be given, the labor strength of the operators is reduced, and the clinicians can rapidly and accurately diagnose the illness of patients.