CA19-9 measuring method, CA19-9 measuring kit, antibody-immobilized carrier used therefor, and method for producing the same

摘要

PROBLEM TO BE SOLVED: To provide a CA19-9 measuring method capable of specifically measuring CA19-9 derived from a malignant disease in a sample more than ever before. A method for measuring CA19-9 in a sample, comprising the step of contacting an antibody-immobilized carrier comprising a carrier and an antibody immobilized on the surface of the carrier with the sample, wherein the antibody is CA19-9. Is an antibody capable of specifically binding to CA19-9 and is immobilized on the surface of the carrier, and the density of the antibody capable of specifically binding to CA19-9 is 1.0 fg / μm