Table 3.

Differences in C (or FGCM, accordingly) concentrations in different matrices.

Total	Serum—V (ng/mL)	Serum—K (ng/mL)	Serum—L (ng/mL)	Saliva (ng/mL)	Faeces (ng/g)	Hair (ng/g)
Mean	93.49	52.86	77.04	12.63	22.59	27.40
SE	3.45	4.29	5.50	1.14	1.53	1.92
SD	25.85	23.08	26.37	6.16	10.04	12.59
N	56	29	23	29	43	43