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. Author manuscript; available in PMC: 2013 Nov 1.
Published in final edited form as: Anal Biochem. 2012 Jul 31;430(1):4–15. doi: 10.1016/j.ab.2012.07.022

Fig. 5.

Fig. 5

Linear relationship between measured and added AECK-DD concentration in human plasma and urine samples from two healthy volunteers in an extended (A) and in a narrow (B) concentration range of AECK-DD. The final concentration of 13C2-AECK-DD added to the urine and plasma specimens as IS was 25 μM in (A) and 250 nM in (B). Plasma was obtained from blood anticoagulated with EDTA (A) or citrate (B). Data are presented as mean ± SD, n = 4 (two sets of determinations each carried out in duplicate).