yes it can be used. but for what purpose you want to use?

I recommend against it, use more established biomarkers, such as oxidized lipids or proteins or DNA.

Yes. it can be use but the problem is how to purified the electrolyte?????

I would suggest you to use a more appropriate and robust method, such as TAC-IT kit for detecting total antioxidant capacity in whole blood, that is sold by an Italian Company (www.solosal.it)

Best wishes,

GL

I agree with comments above.  This is indeed an often ignored (yet very important) consequence of membrane lipid peroxidation.  The polar modifications to membrane lipids makes them permeable to ions. A quick Goggle search turned up https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2098729/  .  

Thanks for your answers and great help. Regards