Fig. 1: Identification and quantification of AAs based on retention times and peak areas.
From: Variations of blood D-serine and D-aspartate homeostasis track psychosis stages

HPLC chromatogram illustrating the D-aspartate (D-Asp), L-aspartate (L-Asp), L-asparagine (L-Asn), L-glutamate (L-Glu), D-serine (D-Ser), L-serine (L-Ser), L-glutamine (L-Gln) and glycine (Gly) peaks obtained from blood serum samples. The identity of the peaks corresponding to D-Asp and D-Ser was verified by adding internal standards to the serum sample (inset, blue line).