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Table 1 Whithin-run accuracy and precision of N7-CAG

From: Analysis of N7-(2-carbamoyl-2-hydroxyethyl)guanine in dried blood spot after food exposure by Ultra High Performance Liquid Chromatography–Tandem Mass Spectrometry

Sample

Actual concentration (ng/ml)

Measured concentration (Average ± SD; ng/ml)

CV (%)

%diff

LLOQ

10.00

10.05 ± 0.41

4.07

− 5.10 to 4.59

QCL

20.00

26.67 ± 1.29

4.84

− 13.96 to − 3.49

QCM

150.00

138.37 ± 3.35

2.42

− 10.35 to − 4.90

QCH

225.00

213.90 ± 11.53

5.39

− 12.26 to 2.08