Gastric cancer diagnosis and prevention: Detecting precancerous at community level

Table 5 Serological criteria for determining low and high risk of gastric cancer

Localization	Gastric corpus-PG-1 (μg/L)
Gastric antrum-G -17 (pmol/L)	Serology	0 (> 25)	1 (> 25)	2 (15-25)	3 (9-15)	4 (0-9)
	0 (> 10)	1	1	1	2	5
	1 (> 10)	1	2	2	2	5
	2 (7-10)	2	2	2	3	5
	3 (4-7)	2	2	4	5	10
	4 (0-4)	18	18	36	36	90

0: Normal stomach; 1: No atrophy; 2: Mild atrophy; 3: Moderate atrophy; 4: Severe atrophy.