Biological Variation of Total Prostate-Specific Antigen: A Survey of Published Estimates and Consequences for Clinical Practice
Author(s) -
György Sölétormos
Publication year - 2005
Publication title -
clinical chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.705
H-Index - 218
eISSN - 1530-8561
pISSN - 0009-9147
DOI - 10.1373/clinchem.2004.046086
Subject(s) - replicate , prostate specific antigen , prostate , prostate biopsy , medicine , variation (astronomy) , coefficient of variation , antigen , biopsy , oncology , urology , statistics , immunology , mathematics , cancer , physics , astrophysics
The objectives of this study were to determine whether a single result for total prostate-specific antigen (tPSA) can be used confidently to guide the need for prostate biopsy and by how much serial tPSA measurements must differ to be significant. tPSA measurements include both analytical and biological components of variation. The European Group on Tumor Markers conducted a literature survey to determine both the magnitude and impact of biological variation on single, the mean of replicate, and serial tPSA measurements.
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