Mass Spectrometry and NMR SpectroscopyeBased Quantitative Metabolomics - Proteomic and Metabolomic Approaches to Biomarker Discovery - page 285

FIGURE 4 Concentration of some
of the metabolites in the NIST plasma
obtained using 1D/2D NMR experi-
ments with and without isotope
tagging: (A) obtained from 1 H- 15 N
HSQC NMR after 15 N tagging; (B)
obtained from 1 H- 13 C HSQC NMR
after 13 C tagging; (C) obtained from
1 H- 1 H TOCSY NMR of neat plasma;
and (D) obtained from 1D NMR of the
neat plasma sample. (Reproduced with
permission from reference #122.)

(A)

(B)

(C)

(D)