| pubmed-article:9264766 | pubmed:abstractText | Prostate Specific Antigen (PSA) exists in the serum in several molecular forms which can be measured by immunoradiodetectable assays: free PSA and total PSA (which represent the sum of the free PSA and complexed PSA to alpha 1 antichymotrypsin). Recently, the proportion of free to total PSA could enhance the ability to distinguish benign histologic conditions from cancer. | lld:pubmed |
