Serum biomarker tests are useful in delineating between patients with gastric atrophy and normal, healthy stomach

Table 2 Prevalence of patients in corpus atrophy positive (AG+) and negative (AG-) categories if “strict” criteria for cut-off of positive Pg test (Pg test+ versus Pg test-) are used. Comparison between Japanese Pepsinogen test and biopsy histology

	AG+	AG-	Total
Pg test+	9	6	15
Pg test-	11	136	147
Total	20	142	162

AG: Atrophic corpus gastritis present (+) or absent (-). Pg: Pepsinogen test positive (+) or negative (-) for atrophic corpus gastritis.