NET biomarkers can be divided into non-specific (chromogranin A, neuron-specific enolase, and beta-human chorionic gonadotropin) and tumor-specific analytes (insulin, gastrin, vasoactive intestinal peptide, glucagon, somatostatin, serotonin, and 5-hydroxyindoleacetic acid) [2,6]. Here, CHGA is linked to neoplasm.