Table 4.

OTA and OTB-NAC concentrations in human urine samples. SEM represents the standard deviation of two replicates (*single analysis of the human urine; n.d, not detectable; < LOQ, under limit of quantitation). Mean was determined only from quantifiable concentrations

Participant (sex)	OTA (ng mg−1 creatinine)	± SEM (ng mg−1 creatinine)	OTB-NAC (ng mg−1 creatinine)	±SEM (ng mg−1 creatinine)
1 (female)	0.105	0.007	0.176	0.060
2 (female)	0.081	*	< LOQ
3 (female)	0.088	*	< LOQ
4 (male)	0.090	*	< LOQ
5 (male)	0.132	0.032	0.159	0.009
6 (male)	0.097	0.001	0.039	0.003
7 (female)	0.145	*	< LOQ
8 (female)	0.404	*	< LOQ
9 (female)	0.067	*	< LOQ
10 (female)	0.068	0.005	0.055	0.008
11 (female)	0.098	0.006	0.023	0.000
12 (female)	< LOQ		n.d.
13 (male)	0.113	*	n.d.
14 (male)	0.158	*	n.d.
15 (female)	< LOQ		n.d.
16 (male)	< LOQ		n.d.
17 (male)	n.d.		n.d.
18 (male)	n.d.		n.d.
Mean	0.127	0.084	0.092	0.008