Carcinoembryonic antigen, carbohydrate antigen 199 and carbohydrate antigen 724 in gastric cancer and their relationship with clinical prognosis

Table 7 Comparison of serum carcinoembryonic antigen, carbohydrate antigen 199 and carbohydrate antigen 724 levels before and after operation in 87 patients with gastric cancer

Group	n	CEA (ng/mL)	CA199 (U/mL)	CA724 (U/mL)
Before procedure	87	33.11 ± 3.63	57.72 ± 6.64	31.23 ± 3.45
After procedure	87	7.24 ± 1.81	14.23 ± 2.37	4.12 ± 1.12
t value		59.488	57.536	69.712
P value		< 0.001	< 0.001	< 0.001

CEA: Carcinoembryonic antigen; CA199: Carbohydrate antigen 199; CA724: Carbohydrate antigen 724.