Association of Lipids with Oxidative Stress Biomarkers in Subclinical Hypothyroidism

Table 3

Correlations of serums TSH, T3, and fT4 with oxidative stress biomarkers in the whole population before and after controlling for total cholesterol (TC) levels.

Biomarkers	TSH				T3				fT4
	Before		After		Before		After		Before		After
	𝑟	𝑃	𝑟	𝑃	𝑟	𝑃	𝑟	𝑃	𝑟	𝑃	𝑟	𝑃
TBARS, nmol MDA/mL	0.734	0.000	0.149	0.497	−0.137	0.522	0.034	0.875	−0.008	0.969	0.217	0.319
CAT, U/g Hb	0.499	0.004	0.036	0.870	−0.278	0.124	−0.153	0.485	−0.269	0.137	−0.121	0.580
SOD, U/mg Hb	0.330	0.065	0.061	0.781	−0.106	0.566	0.084	0.702	0.014	0.938	0.169	0.440

P < 0.05 was considered statistically significant. TSH: thyroid-stimulating hormone; T3: triiodothyronine; fT4: free thyroxine; TBARS: thiobarbituric acid reactive substances; CAT: catalase; SOD: superoxide dismutase.