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. 2019 Dec 23;92(2):1826–1832. doi: 10.1021/acs.analchem.9b03670

Table 2. Intra- and Inter-Day Precision of the Compounds, Analyzed by the Gas Chromatography–Tandem Mass Spectrometry Method (GC–MS/MS) Method in the MRM Mode (CV, Coefficient of Variation; enr, Enrichment).

  glyoxylate glycolate oxalate
intraday precision (CV%) control sample low enr. 4.9 2.0 4.2
interday precision (CV%) control sample low enr. 13.5 1.6 6.3
intraday precision (CV%) control sample high enr. 6.7 2.4 1.1
interday precision (CV%) control sample high enr. 18.3 2.2 0.7