The combined detection of carcinoembryonic antigen, carcinogenic antigen 125, and carcinogenic antigen 19-9 in colorectal cancer patients

Table 2 Comparison of serum carcinoembryonic antigen, cancer antigen 125 and cancer antigen 19-9 levels between two groups of patients, mean ± SD

Serum markers	Simple colorectal cancer group (n = 50)	Colorectal cancer with liver metastasis group (n = 50)	t	P value
CEA (ng/mL)	5.71 ± 9.76	162.03 ± 810.01	-1.81	0.72
CA125 (U/mL)	13.5 ± 19.68	43.47 ± 83.52	-3.28	0.01
CA19-9 (U/mL)	26.55 ± 43.96	184.46 ± 473.13	-3.1	0.02

CEA: Carcinoembryonic antigen; CA: Cancer antigen.