Hp is a helical gram-negative rod that is present on the gastric mucosa.6 Previous studies have shown that Hp infection is an important cause of active gastritis.7 In addition, Hp infection is associated with gastric cancer in ∼50% of gastric cancer patients.8 Therefore, an effective method for detecting Hp in clinical practice is important for the prevention and control of gastrointestinal diseases that it causes. Here, HP is linked to gastric cancer.