Thiobarbituric acid reactive substances

Thiobarbiturate reactive substances (TBARS) are the low-molecular-weight end products, whose main component is malondialdehyde, that are formed during the decomposition of lipid peroxidation products. These compounds react with thiobarbituric acid to form a fluorescent red adduct which can be measured spectrometically. The plasma or urine concentration of the thiobarbiturate reactive substances (TBARS) is used as an index of lipid peroxidation and oxidative stress.