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. Author manuscript; available in PMC: 2019 Dec 11.
Published in final edited form as: Anal Chim Acta. 2018 Aug 8;1037:351–357. doi: 10.1016/j.aca.2018.08.004

Fig. 2:

Fig. 2:

Comparison of plasma ISTD peak areas for the 80% MeOH [A], Folch [B], Bligh-Dyer [C], and Matyash [D] extraction methods for each human plasma sample-to-solvent ratio (1:4, 1:10, 1:20, and 1:100). Error bars represent the standard deviation of the mean.