Identification and validation of serum amino acids as diagnostic biomarkers for diabetic peripheral neuropathy

Figure 6 Heatmap correlation between the measured serum amino acid levels and both electromyography parameters and clinical scores. A: Electromyography parameters; B: Clinical scores. ^aP < 0.05; ^bP < 0.01; ^cP < 0.001; PHQ: Patient health questionnaire; VAS: Visual analog scale; TCSS: Toronto Clinical Scoring System; GAD: Generalized anxiety disorder questionnaire.