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. Author manuscript; available in PMC: 2015 Oct 1.
Published in final edited form as: Metabolomics. 2014 Feb 27;10(5):897–908. doi: 10.1007/s11306-014-0642-1

Table 1.

The median percent CV for each volume and pre-treatment and a 2-sided Wilcoxon rank sum test comparing medians between the two treatments. UT: urease pre-treated; NT: no pre-treatment.

Volume (µL) NT CV (%) UT CV (%) p-value
5 10.2 8.1 1e-3
10 9.7 5.1 6e-10
25 5.7 6.5 0.02
50 6.7 3.1 9e-9
100 16.7 6.2 3e-18
All 9.6 6.1 1e-20