Relationship between serum calcium and CA 19-9 levels in colorectal cancer

Table 1 Laboratory data of CRC patients (mean ± SE)

	CRC	Control	P	Normal value
Calcium (Ca)	2.26 ± 0.17	2.45 ± 0.09	0.0001	2.25-2.61 mmol/L
Corrected Ca	2.26 ± 0.14	2.37 ± 0.11	0.0001	2.25-2.61 mmol/L
Ionized calcium	1.07 ± 0.07	1.2 ± 0.05	0.0001	1.05-1.25 mmol/L
Phosphate	1.07 ± 0.13	1.2 ± 0.22	0.006	0.85-1.45 mmol/L
Albumin	39.5 ± 4.61	43.87 ± 4.37	0.0001	35-50 g/L
AFP	4.19 ± 2.85	3.34 ± 1.58	NS	0-15 ng/L
CEA	18.84 ± 69	1.79 ± 1.86	0.043	0-10 ng/L
CA 19-9	86.49 ± 406	10.20 ± 9.95	NS	0-37 ng/L
PTH	38.2 ± 16.8	41.5 ± 14.6	NS	10-65 pg/mL
25 (OH) vit. D	44.7 ± 73.8	46.84 ± 13.7	NS	20-60 ng/L
Age (yr)	65.6 ± 10.9	63.6 ± 8.2	NS	-

NS = no significant difference.