Comet assay measures DNA breaks, induced by different factors. If all factors (except oxidative stress) causing DNA damage are kept constant, the amount of DNA damage is a good indirect parameter of oxidative stress. The goal of this protocol is to use comet assay for indirect measurement of oxidative stress.
Fang, L., Neutzner, A., Turtschi, S., Flammer, J., Mozaffarieh, M. Comet Assay as an Indirect Measure of Systemic Oxidative Stress. J. Vis. Exp. (99), e52763, doi:10.3791/52763 (2015).