Free, Complexed and Total Serum Prostate Specific Antigen : The Establishment of Appropriate Reference Ranges for their Concentrations and Ratios
Purpose: Prostate specific antigen (PSA) exists in the serum in several molecular forms that can be measured by immunodetectable assays: free PSA, PSA complexed to alpha 1-antichymotrypsin (complexed PSA) and total PSA, which represents the sum of the free and complexed forms. We determined the normal distribution of values and established the appropriate reference ranges for these 3 molecular for
