Internal Validation and Correlation of 2 Different Prostate Specific Antigen Assays for Prostate Cancer Screening in Community Based Men.

Introduction: There are more than 20 prostate specific antigen assays in use in the United States and studies have been mixed regarding correlations among them. The Abbott ARCHITECT Total PSA and the Roche Modular Analytics E170 Total PSA have been used in 2 local hospital systems that recently merged. We defined the comparability of these assays and present it from a clinical perspective.