Abstract
Pre-analytical variables can alter the analysis of blood-derived samples. In particular sample collection and specimen preparation can alter the validity of results obtained by modern multiplex assays (e.g., LC-MS). Low-molecular-weight proteins (peptides) as products of proteolytic cleavage events exhibit a close connection to protease activity. Increased or altered activity of proteases during sample collection, specimen generation, sample storage, and processing is mirrored by alterations in abundance of specific peptides. Awareness of clinical practices in medical laboratories and the current knowledge allow for identification of specific variables that affect the results of a peptidomic study. Knowledge of pre-analytical variables is a prerequisite to understand and control their impact.
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Tammen, H., Hess, R. (2013). Collection and Handling of Blood Specimens for Peptidomics. In: Bäckvall, H., Lehtiö, J. (eds) The Low Molecular Weight Proteome. Methods in Molecular Biology, vol 1023. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-7209-4_10
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DOI: https://doi.org/10.1007/978-1-4614-7209-4_10
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