A low pepsinogen 1 of 31.7ng/mL is a more serious condition. Low pepsinogen 1 may be associated with atrophic gastritis, megaloblastic anemia, hypothyroidism and other factors. Pepsinogen 1 is an important indicator for detecting the function of gastric secretory gland cells, with a normal range of 67ng/mL to 200ng/mL. Pepsinogen 1 test value of 31.7ng/mL suggests that it is low, which means that there is damage to the gastric mucosa or the gastric body may have lesions, such as irregular diet, Helicobacter pylori infection, gastric cancer, atrophic gastritis, hypothyroidism and so on. Pepsinogen 1 low 31.7ng/mL suggests timely consultation, with the help of the doctor to clarify the cause of the disease, and targeted treatment or therapy.