Table 2.

Repeatability and reproducibility test. Results are from plasma and liver (single batch) and pooled serum quality control (QC) samples (analyzed over three large batches of around 115 samples per batch). RSD: relative standard deviation.

Parameter	Plasma	Liver	Batch 1	Batch 2	Batch 3
Number of metabolites	$22.8\pm$ 0.5	$37\pm$ 0	$20.3\pm$ 1.9	$20.2\pm$ 2.4	$20.2\pm$ 2.2
Number of missing values	11 (0.8%)	0 (0%)	24 (11%)	25 (12%)	25 (12%)
Median RSD	16%	10%	21%	20%	19%
RSD range	11–28%	2–56%	3–42%	12–69%	13–39%