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. Author manuscript; available in PMC: 2012 Oct 17.
Published in final edited form as: Chem Res Toxicol. 2011 Sep 14;24(10):1729–1734. doi: 10.1021/tx200262d

Table 1.

A leukocyte DNA sample containing 7-ethyl-Gua (~10 fmol/μmol Gua) was used to assess the precision of the method. Three aliquots of the leukocyte DNA were analyzed on three separate days and the coefficient of variation (% CV) of the measurement was calculated.

7-Ethyl-Gua (fmol/μmol Gua)
day 1 day 2 day 3 interday

mean ± SD mean ± SD mean ± SD average % CV
11.1 ± 0.45 10.5 ± 0.30 11.4 ± 0.24 11.0 ± 0.41 3.7