Figure 4: The nine stacked plots illustrate the estimated mean creatinine concentration in the serum (A) and urine (B-I) for each normalization method plus raw. Error bars indicate the 95% confidence interval for the mean as estimated by rmANOVA. *: Profiled metabolites are exclusive of lactate, glucose, and urea. **: Units are mM but scaled by the appropriate PQ normalization constant.
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