Within-Subject Reliability and between-Subject Variability of Oxidative Stress Markers in Saliva of Healthy Subjects: A Longitudinal Pilot Study

Table 2

Between-subject means, standard deviations (SD), and group coefficient of variation (CV).

	Morning		Afternoon
	Mean (SD)	Group CV (%)	Mean (SD)	Group CV (%)
GPX (U/g)	114.8 (57)	49.66	151.4 (61)	40.32
SOD (U/g)	2828.7 (872.2)	30.83	2609.9 (1494)	57.24
TAC (mmol/g)	1.6 (0.5)	30.08	2.1 (0.7)	33.04
UA (umol/g)	340 (138.4)	40.71	425.8 (128.9)	30.28
8-OHdG (ug/g)	2.4 (1.8)	75.00	2.1 (1.8)	85.7
MDA (nmol/g)	531 (314)	59.13	1241.3 (1026)	82.65

GPX: glutathione peroxidase; SOD: superoxide dismutase; TAC: total antioxidant capacity; UA: uric acid; 8-OHdG: 8-hydroxydeoxyguanosine; MDA: malondialdehyde.