exp_input               A data frame of expected ERCC1 and ERCC2 ratios
getLowLcpmCutoff        Function to empirically determine a log2 CPM
                        cutoff based on ERCC RNA spike-in
mta_dta                 A data frame containing sample-level ERCC meta
                        data
obs_input               A data frame of observed spike in ERCC
                        normalized LCPM data
plot.empLCPM            Plot the empirically derived LCPM cutoff
print.empLCPM           Print the empirically derived LCPM cutoff
                        results
summary.empLCPM         Summarizing the empirically derived LCPM cutoff
