Hello. You can use any of them: EDTA, heparin or citrate. They do not interfere with the reaction.

Heparinized is best option.

EDTA

EDTA is better 

NaEDTA

Thanks for all of you .

Both can be used

Tenia saginata

only EDTA for ex vivo peroxidation and Fenton/s reaction prevention

Transfection?

Any of the two. But heparinized is preferable if you are also going to assay for total antioxidant capacity.