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. Author manuscript; available in PMC: 2011 Mar 16.
Published in final edited form as: Anal Chem. 2009 Oct 15;81(20):8538–8544. doi: 10.1021/ac9014947

Table 3.

Variation of individual metabolites in matched human plasma and CSF from 10 male individuals.

Metabolite ID CV (%) Integrated intensity (thousands)

CSF Plasma CSF Plasma
phenylalanine 15 19 4,225 13,230
carnitine 19 24 229 878
valine 27 17 480 1,482
methionine 65 40 43 130
tyrosine 14 31 141 394
citrulline 29 19 79 230
tryptophan 19 21 2,416 7,772
cortisol 14 30 49 154
Decanoyl carnitine 32 130 105 530
glycerolphosphocholine (16:0) 100 19 915 2,979
lauric acid 25 60 31 83
palmitic acid 7 114 25 120
AVERAGE 31 43 -- --