| abstract |
The object of the present invention is to provide a new method for judging Pca and a method for judging its malignancy. The present invention relates to "a method for determining prostate cancer, wherein in a sample derived from a living body, the moiety having the sialic acid residue at the end of the sugar chain bonded to the second position from the end of the sugar chain by an α(2,3) bond is measured. When the ratio of the free-type PSA amount of the sugar chain of lactose residue to the free-type PSA amount is higher than 40%, it is judged to be prostate cancer or the possibility of prostate cancer is high". |