PG I

Increase: seen in gastric cancer, duodenal ulcer, gastric ulcer

Decrease: atrophic gastritis, gastric cancer

PG II

Increase: seen in gastric fundus gland atrophy, intestinal metaplasia or pseudopyloric gland metaplasia, heterogeneous hyperplasia, etc.

The progressive decrease in PG I/II ratio is associated with the progression of gastric mucosal atrophy.

G17

Judge the gastric secretory function

Reflect the stomach acid

Suggest the location, degree and risk of gastric mucosal atrophy

Guide the rational use of drugs, such as proton pump preparations (PPI), non-steroidal anti-inflammatory drugs (NSAID), etc.