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. Author manuscript; available in PMC: 2008 Jun 1.
Published in final edited form as: J Chromatogr B Analyt Technol Biomed Life Sci. 2007 Feb 21;852(1-2):554–561. doi: 10.1016/j.jchromb.2007.02.024

Table 3.

Recovery of HCY, CYS, CysGly, and GSH from human plasma (n = 6)

Concentration (μM)
% Rec % RSD
Plasma Spiked Measured
HCY 6.5 ± 0.2 4.0 10.8 ± 0.3 103.4 ± 4.5 4.3
16.0 22.0 ± 0.7 97.9 ± 3.6 3.6
80.0 86.0 ± 4.0 99.4 ± 4.6 4.6
CYS 261.4 ± 8.3 32.5 288.9 ± 8.4 98.4 ± 4.8 4.8
130.0 346.1 ± 10.1 88.5 ± 3.9 4.4
650.0 800.5 ± 35.6 87.8 ± 3.9 4.4
CysGly 34.3 ± 1.1 7.5 43.6 ± 1.3 104.4 ± 5.0 4.8
30.0 63.4 ± 1.9 98.5 ± 4.1 4.2
150 187.4 ± 8.7 101.7 ± 4.7 4.7
GSH 5.4 ± 0.1 2.0 7.2 ± 0.2 97.5 ± 3.6 3.7
8.0 11.8 ± 0.4 88.4 ± 3.6 4.1
40.0 42.8 ± 2.1 94.2 ± 4.7 5.0