anomalous concentration in the blood of polypeptide hormones secreted by the pyloric-antral mucous lining of the stomach that induces the secretion of gastric juice by the parietal cells of the gastric glands; they also occur in the central nervous system where they are presumed to be neurotransmitters
abnormal circulating ghrelin level +
abnormal circulating glucagon level +
abnormal circulating glucocorticoid level +
abnormal circulating gonadotropin level +
abnormal circulating insulin level +
abnormal circulating insulin-like growth factor I level +