Gene polymorphism detection method

The polymorphic site is present in an amplified fragment obtained by amplifying at least one of the gene encoding the receptor and its complementary sequence so as to include a polymorphic site present in the gene encoding the receptor or its complementary sequence An oligonucleotide probe and / or oligonucleotide primer is prepared so as to be contained, and at least one gene polymorphism in a gene encoding a target receptor is obtained using the resulting oligonucleotide probe and / or oligonucleotide primer. A method for detecting a genetic polymorphism characterized by detecting.