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. Author manuscript; available in PMC: 2015 Jun 15.
Published in final edited form as: Anal Biochem. 2014 Apr 1;455:35–40. doi: 10.1016/j.ab.2014.03.016

Fig. 5.

Fig. 5

(A) Extracted ion LC chromatogram at the LLOQ from multiple reaction monitoring in the positive mode of the 76 amu to 58 amu precursor to product ions from a 0.05 µM TMAO standard spiked to dialyzed plasma, note this gives a signal-to-noise ratio (S/N) of 10 : 1. (B) Extracted ion LC chromatogram recorded as above of the plasma TMAO level at the lowest concentration (0.06 µM) among the more than 4,000 human samples analyzed.