Quality assessment for prostate-specific antigen (PSA) in relation to ERSPC: report of the PSA committee.
OBJECTIVE: To assess the application of a quality control scheme for total prostate-specific antigen (PSA) as used for participants of the European Randomized Study for Screening of Prostate Cancer (ERSPC) during 1996-2002. METHODS: From 1996, the first complete year being 1997, an external scheme was organized by the Dutch Quality Assessment Foundation especially for the ERSPC. This scheme consists of one control round every 2 months with two different human serum samples and is only meant t...Expand abstract
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