Reproducibility and accuracy of measurements of free and total prostate-specific antigen in serum vs plasma after long-term storage at -20 degrees C.
BACKGROUND: Long-term frozen storage may alter the results of prostate-specific antigen (PSA) measurements, mainly because of degradation of free PSA (fPSA) in vitro. We compared the effects of long-term storage on fPSA, total PSA (tPSA), and complexed PSA (cPSA) in serum vs EDTA-plasma samples. ME...
Main Authors: | Ulmert, D, Becker, C, Nilsson, J, Piironen, T, Björk, T, Hugosson, J, Berglund, G, Lilja, H |
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Format: | Journal article |
Language: | English |
Published: |
2006
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