Separate Metabolites into Likely Measurement Artifacts and True Metabolites

Split an untargeted metabolomics data set into a set of likely true metabolites and a set of likely measurement artifacts. This process involves comparing missing rates of pooled plasma samples and biological samples. The functions assume a fixed injection order of samples where biological samples are randomized and processed between intermittent pooled plasma samples. By comparing patterns of missing data across injection order, metabolites that appear in blocks and are likely artifacts can be separated from metabolites that seem to have random dispersion of missing data. The two main metrics used are: 1. the number of consecutive blocks of samples with present data and 2. the correlation of missing rates between biological samples and flanking pooled plasma samples.


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install.packages("MetProc")

1.0.1 by Mark Chaffin, 10 months ago


Browse source code at https://github.com/cran/MetProc


Authors: Mark Chaffin


Documentation:   PDF Manual  


GPL (>= 2) license


Imports gplots, fastcluster

Suggests knitr, rmarkdown


See at CRAN